Bachelor of Landscape Architecture (BLArch) Comprehensive Exam — Questions and Answers

Question 1: Which type of retaining wall relies on the weight of the wall itself (gravity) to resist soil pressure?

Cantilever wall
Sheet pile wall
Soldier pile wall
Gravity wall (Correct answer)

Correct answer: Gravity wall

A gravity retaining wall uses its own mass to resist the lateral pressure of retained soil, typically constructed of concrete, stone, or masonry.

Question 2: A 'swale' in site drainage is best described as:

An underground cistern for water storage
A vertical retaining structure
A shallow, vegetated channel that conveys stormwater (Correct answer)
A permeable paving system

Correct answer: A shallow, vegetated channel that conveys stormwater

A swale is a shallow, gently sloping, vegetated channel designed to slow, filter, and convey stormwater runoff across a site.

Question 3: What is the primary function of mycorrhizal fungi in relation to landscape plants?

Fix atmospheric nitrogen
Enhance nutrient and water uptake by roots (Correct answer)
Suppress weed growth
Decompose organic matter

Correct answer: Enhance nutrient and water uptake by roots

Mycorrhizal fungi form symbiotic relationships with plant roots, dramatically extending the root system's ability to absorb water and nutrients.

Question 4: A 'bubble diagram' is used early in the site planning process primarily to:

Show finished floor elevations and grading slopes
Document existing utilities and easements
Calculate stormwater runoff volumes from each drainage zone
Represent approximate spatial relationships and adjacencies between program elements (Correct answer)

Correct answer: Represent approximate spatial relationships and adjacencies between program elements

Bubble diagrams are schematic sketches that communicate relative size, location, and relationships of program areas before detailed design begins.

Question 5: Which landscape grass is classified as a 'cool-season' turfgrass used primarily in northern US lawns?

St. Augustinegrass
Zoysiagrass
Bermudagrass
Kentucky Bluegrass (Correct answer)

Correct answer: Kentucky Bluegrass

Kentucky Bluegrass is a cool-season turfgrass that thrives in the northern US, growing actively in spring and fall.

Question 6: What does 'FAR' (Floor Area Ratio) measure in urban development?

The height limit of a structure in stories
The percentage of a lot covered by buildings
The proportion of green space required per project
The ratio of total building floor area to the land area of the lot (Correct answer)

Correct answer: The ratio of total building floor area to the land area of the lot

FAR is calculated by dividing total building floor area by the site area, determining overall development intensity regardless of building footprint or height.

Question 7: What is the primary purpose of a 'rain garden' in landscape planting design?

Provide shade to adjacent structures
Reduce wind speeds on site
Capture and infiltrate stormwater runoff (Correct answer)
Aesthetic focal point

Correct answer: Capture and infiltrate stormwater runoff

Rain gardens are shallow, planted depressions designed to capture and infiltrate stormwater runoff from impervious surfaces.

Question 8: A rain garden is best described as:

A formal garden feature incorporating decorative fountains
A shallow, vegetated depression that collects and infiltrates stormwater runoff (Correct answer)
A garden that exclusively uses rainwater for drip irrigation
An elevated planting bed used for food production

Correct answer: A shallow, vegetated depression that collects and infiltrates stormwater runoff

Rain gardens are shallow, planted depressions designed to collect stormwater runoff from impervious surfaces and allow it to slowly infiltrate into the ground over 24–48 hours.

Question 9: Ian McHarg's book 'Design with Nature' (1969) introduced which fundamental concept to landscape architecture?

The picturesque aesthetic
Ecological planning using natural systems as the basis for design (Correct answer)
Modernist minimalism
Formal axial symmetry

Correct answer: Ecological planning using natural systems as the basis for design

Ian McHarg's 'Design with Nature' advocated for ecological planning — using layered maps of natural systems to determine appropriate land use and minimize environmental impact.

Question 10: Who is widely considered the founder of the landscape architecture profession in the United States?

Calvert Vaux
Andrew Jackson Downing
Frederick Law Olmsted Sr. (Correct answer)
Charles Eliot

Correct answer: Frederick Law Olmsted Sr.

Frederick Law Olmsted Sr. is considered the father of American landscape architecture, most famously for co-designing Central Park in New York City.

Question 11: What is the term for the arrangement of plants by height from tallest at back to shortest at front in a border?

Succession planting
Layered planting
Staggered massing
Tiered arrangement (Correct answer)

Correct answer: Tiered arrangement

A tiered arrangement places tall plants at the rear and progressively shorter plants toward the front to maximize visibility and visual interest.

Question 12: What does the term 'specimen plant' mean in landscape design?

A plant installed in large drifts
A plant used for erosion control
A single plant placed as a focal point due to its outstanding features (Correct answer)
A plant selected for its edible qualities

Correct answer: A single plant placed as a focal point due to its outstanding features

A specimen plant is a single plant positioned prominently to showcase its outstanding form, texture, color, or seasonal interest.

Question 13: Energy rises in an energy pyramid.

stays the same
increases exponentially
increases
decreases (Correct answer)

Correct answer: decreases

An energy pyramid illustrates the flow of energy through different trophic levels in an ecosystem. As you move up the pyramid from producers to higher-level consumers, the amount of available energy significantly decreases. This is due to the loss of energy (primarily as heat) at each transfer between trophic levels, following the 10% rule.

Question 14: The ASLA (American Society of Landscape Architects) was founded in which year?

1935
1899 (Correct answer)
1876
1920

Correct answer: 1899

ASLA was founded in 1899 by a group including Frederick Law Olmsted Jr., Beatrix Jones (Farrand), and others, formalizing the profession in the United States.

Question 15: In a USGS topographic map, contour lines that are spaced very close together indicate:

A flat floodplain with minimal relief
A steep slope with rapid elevation change (Correct answer)
A ridge line where two slopes diverge
A depression or closed basin

Correct answer: A steep slope with rapid elevation change

Closely spaced contour lines represent rapid elevation change over a short horizontal distance, indicating a steep slope.

Question 16: The members of the interior design board should include.

3 members
A chairman and 2 members (Correct answer)
A chairman and 3 members
2 members

Correct answer: A chairman and 2 members

According to Republic Act No. 8534, the Professional Regulatory Board of Interior Design is structured to include a Chairman and two (2) members. This composition ensures a balanced and effective decision-making body responsible for regulating the interior design profession and upholding its standards.

Question 17: It describes a soil sample's particle composite sizes?

Texture (Correct answer)
Class
Percentage
None of the above
Weight

Correct answer: Texture

Soil 'texture' describes the relative proportions of different-sized mineral particles in a soil sample, specifically sand, silt, and clay. This characteristic is crucial as it influences water retention, drainage, aeration, and nutrient availability. The other options describe other properties or ways to quantify soil, but not the composite particle sizes.

Question 18: The diagram depicts what type of growth?

exponential growth (Correct answer)
logistic growth
predator-prey cycle
boom-bust curve

Correct answer: exponential growth

Exponential growth occurs when a population increases at a constant rate per capita, resulting in a J-shaped curve on a graph. This type of growth happens under ideal conditions with unlimited resources and no limiting factors. The population size accelerates rapidly over time, as each individual contributes to the overall growth rate.

Question 19: Which grading technique is used to transition between two different finished floor elevations without steps in an accessible route?

A sloped walkway not exceeding 1:20 (5%)
A level landing at every 30 inches of vertical rise
Spot grading at building corners
A ramp with handrails at a maximum 1:12 slope (Correct answer)

Correct answer: A ramp with handrails at a maximum 1:12 slope

ADA-compliant ramps with slopes no steeper than 1:12 (8.33%) and handrails are required when accessible routes must change elevation by more than ½ inch.

Question 20: Which of the following best defines 'edge effect' in landscape ecology?

The erosion pattern along a watercourse bank
Increased species diversity and activity at the transition zone between two habitats (Correct answer)
The visual boundary created by contrasting plant textures in a planting bed
Wind turbulence created at the perimeter of a windbreak planting

Correct answer: Increased species diversity and activity at the transition zone between two habitats

Edge effect describes the phenomenon where habitat boundaries (ecotones) support greater species richness due to access to resources from two adjacent ecosystems.

Question 21: The 'Vaux-le-Vicomte' estate in France is an example of which landscape design style?

Japanese stroll garden
English Romantic
French Baroque Formal (Correct answer)
Mughal garden

Correct answer: French Baroque Formal

Vaux-le-Vicomte, designed by André Le Nôtre in 1661, exemplifies the French Baroque formal garden with strong central axis, parterres, and forced perspective.

Question 22: What is the correct term for the seasonal shedding of leaves by deciduous trees in autumn?

Defoliation
Abscission (Correct answer)
Dormancy
Senescence

Correct answer: Abscission

Abscission is the biological process by which plants shed leaves, flowers, or fruit by forming a specialized layer of cells at the base of the petiole.

Question 23: What fuels all life?

Water
Earth's Core
Plants
The Sun (Correct answer)

Correct answer: The Sun

The Sun is the ultimate source of energy for almost all life on Earth. Through photosynthesis, producers like plants convert solar energy into chemical energy, forming the base of nearly every food chain and ecosystem. This energy then flows through different trophic levels, sustaining all other life forms.

Question 24: Which of the following trees is commonly used as a street tree in US cities due to its tolerance of compacted urban soils?

White Oak (Quercus alba)
American Elm (Ulmus americana)
Sugar Maple (Acer saccharum)
Honeylocust (Gleditsia triacanthos) (Correct answer)

Correct answer: Honeylocust (Gleditsia triacanthos)

Thornless honeylocust is widely planted as a street tree because it tolerates compacted soils, drought, salt spray, and urban heat.

Question 25: What is the primary goal of Low Impact Development (LID) in landscape design?

Maximize impervious surface coverage
Eliminate all vegetation from development sites
Increase stormwater runoff velocity
Mimic natural hydrology by managing stormwater at the source (Correct answer)

Correct answer: Mimic natural hydrology by managing stormwater at the source

LID aims to mimic natural hydrology by managing stormwater at its source through infiltration, evapotranspiration, and reuse rather than rapid conveyance.

Question 26: In urban park design, what is 'park equity' primarily concerned with?

Ensuring all residents have fair access to quality green spaces regardless of income or race (Correct answer)
Charging the same park fees city-wide
Equal park sizes across all neighborhoods
Balancing athletic fields with passive areas

Correct answer: Ensuring all residents have fair access to quality green spaces regardless of income or race

Park equity focuses on closing the gap in green space access and quality between wealthy and underserved communities, often driven by historical disinvestment.

Question 27: Contour maps show four slope types except?

Convex
Concave
S-shape
L-shape (Correct answer)
Straight

Correct answer: L-shape

Contour maps use various patterns of contour lines to represent different slope types, including convex, concave, S-shape, and straight slopes. These shapes indicate how the terrain rises or falls. An 'L-shape' is not a recognized or descriptive term for a slope type represented by contour lines.

Question 28: "Landscapes without axes or curves. Changeable, abundant, profound, and implicative. It has rolling or diverse landforms, symmetrical or non-symmetrical buildings, natural curves on water bodies, freely curved exterior borderlines of squares and roadways, and random planting design."

Hellenistic Gardens
Natural Landscapes (Correct answer)
Hellenistic Gardens
Byzantine Gardens

Correct answer: Natural Landscapes

The description emphasizes characteristics like 'without axes or curves' (implying organic, not formal), 'rolling or diverse landforms,' 'natural curves on water bodies,' and 'random planting design.' These attributes are hallmarks of natural landscapes, which seek to emulate the unconstrained and varied beauty of nature rather than imposing strict geometric order.

Question 29: a group of creatures that come from many populations yet coexist in the same space and communicate with one another.

Ecosphere
Population
Community (Correct answer)
Ecosystem

Correct answer: Community

A community in ecology refers to all the different populations of various species that live and interact in the same area. It encompasses the biotic (living) components of an ecosystem, excluding the abiotic (non-living) factors. The description precisely matches this definition, as it specifies multiple populations coexisting and communicating.

Question 30: What are the three primary soil classes? i. clay ii. loam iii. sand iv. silt v. lime

i,ii and iii (Correct answer)
iii, iv and v
ii, iii and iv
ii, iv and v
i, iii and v

Correct answer: i,ii and iii

The three primary particle sizes that define soil texture are sand, silt, and clay. 'Loam' is a specific soil class that represents an optimal mixture of these three particle types, offering good drainage and water retention. Therefore, clay, loam, and sand are commonly recognized as primary soil classes or components when discussing soil composition.

Question 31: The standard of care for a landscape architect is defined as:

The level of skill and care ordinarily exercised by competent professionals in the same field under similar circumstances (Correct answer)
Whatever standard the client specifies in the contract
Full compliance with all possible applicable codes regardless of local adoption
Perfection and zero defects in all deliverables

Correct answer: The level of skill and care ordinarily exercised by competent professionals in the same field under similar circumstances

Standard of care is a legal concept based on what a reasonably competent peer would do in the same situation, not perfection.

Question 32: Which term describes a plant that completes its life cycle within a single growing season?

Annual (Correct answer)
Biennial
Perennial
Ephemeral

Correct answer: Annual

An annual plant germinates, flowers, sets seed, and dies all within one growing season, unlike perennials that live for multiple years.

Question 33: In landscape architecture, 'green infrastructure' primarily refers to:

Networks of natural and semi-natural areas providing ecosystem services (Correct answer)
Steel-reinforced planting containers in urban areas
Irrigation systems powered by solar energy
LEED-certified building materials used outdoors

Correct answer: Networks of natural and semi-natural areas providing ecosystem services

Green infrastructure encompasses interconnected networks of natural spaces and ecological systems that deliver ecosystem services like stormwater management and air purification.

Question 34: Which sustainable design principle involves modeling design solutions after natural systems and processes?

Rectilinear planning
Monoculture planting design
Hardscape maximization
Biomimicry (Correct answer)

Correct answer: Biomimicry

Biomimicry is the design principle of modeling solutions after natural systems and processes, working with nature's strategies rather than against them.

Question 35: What is the primary driver of primary succession on a newly formed volcanic island?

Animal migration bringing plant seeds
Wind-dispersed seeds and spores colonizing bare substrate (Correct answer)
Runoff from adjacent land masses
Underwater seed banks activating

Correct answer: Wind-dispersed seeds and spores colonizing bare substrate

Primary succession begins with pioneer organisms like lichens and wind-dispersed seeds colonizing bare, lifeless substrate with no existing soil.

Question 36: What is the main benefit of mulching around the base of trees and shrubs in a landscape?

Retains moisture and moderates soil temperature (Correct answer)
Increases soil compaction
Promotes deep tap root formation
Reduces the need for fertilization permanently

Correct answer: Retains moisture and moderates soil temperature

Mulch retains soil moisture, moderates temperature extremes, suppresses weeds, and improves soil structure as it decomposes.

Question 37: Using water temperature as an example

an abiotic factor. (Correct answer)
a biotic factor.

Correct answer: an abiotic factor.

Abiotic factors are the non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems. Water temperature is a physical characteristic of the environment, not a living component. Therefore, it is classified as an abiotic factor because it is a non-biological influence on an ecosystem.

Question 38: The concept of 'carbon sequestration' in landscape design refers to:

Burying carbon-based construction products underground
The capture and long-term storage of atmospheric carbon dioxide by plants and soil (Correct answer)
Removing all organic matter from site soils before planting
Burning carbon-based landscape waste materials

Correct answer: The capture and long-term storage of atmospheric carbon dioxide by plants and soil

Carbon sequestration refers to the process by which plants absorb atmospheric carbon dioxide during photosynthesis and store it in biomass and soil organic matter, helping mitigate climate change.

Question 39: What is the 'Nolli Map' and why is it referenced in urban landscape theory?

A contemporary GIS mapping standard
An 18th-century map of Rome showing public and private space as figure-ground (Correct answer)
A topographic survey method developed in Italy
A type of site circulation diagram

Correct answer: An 18th-century map of Rome showing public and private space as figure-ground

The Nolli Map (1748) of Rome shows public space (streets, squares, church interiors) as white and private space as dark, creating a figure-ground analysis still used in urban design theory.

Question 40: The concept of 'net-zero water' in sustainable design refers to:

Balancing water consumption with water harvesting and reuse on site (Correct answer)
Using only recycled water for irrigation purposes
Eliminating all water features from a site
Prohibiting all stormwater discharge from the site

Correct answer: Balancing water consumption with water harvesting and reuse on site

Net-zero water means the site balances its total water consumption with water captured and reused from rainfall and other on-site sources.

Question 41: Which biogeochemical cycle is most directly affected by wetland destruction?

Nitrogen cycle (Correct answer)
Phosphorus cycle
Sulfur cycle
Carbon cycle

Correct answer: Nitrogen cycle

Wetlands are critical sites for denitrification, where bacteria convert nitrates back to atmospheric nitrogen, so their loss disrupts the nitrogen cycle.

Question 42: What's aquifer?

Helps to control temperature
Block or filter sunlight
None of these
A geographic area of land bounded by topographic features and height of land that captures precipitation, filters and store water and drains waters to a shared destination.
A permeable geological stratum or formation that can both store and transmit groundwater in significant quantities. (Correct answer)

Correct answer: A permeable geological stratum or formation that can both store and transmit groundwater in significant quantities.

An 'aquifer' is precisely defined as a permeable geological formation, such as a layer of rock or sand, that can both store and transmit significant quantities of groundwater. This definition highlights its dual capacity for holding water and allowing it to flow, making it a vital source of water supply. The other options describe different hydrological or environmental concepts.

Question 43: The 'metapopulation' concept in conservation biology describes:

The total global population of a species
A network of spatially separated subpopulations connected by migration (Correct answer)
A single large population in a continuous habitat
A population that has reached carrying capacity

Correct answer: A network of spatially separated subpopulations connected by migration

A metapopulation consists of distinct local subpopulations linked by dispersal, with local extinctions offset by recolonization from other patches.

Question 44: Which term describes the practice of using plants native to a specific region in landscape design?

Naturalistic planting
Xeriscaping
Native planting (Correct answer)
Biophilic design

Correct answer: Native planting

Native planting uses plants indigenous to a specific geographic region, supporting local wildlife and requiring less maintenance.

Question 45: The High Line in New York City is a celebrated contemporary landscape project built on what type of infrastructure?

A decommissioned highway overpass
A reclaimed waterfront pier
A former subway tunnel
An elevated freight rail line (Correct answer)

Correct answer: An elevated freight rail line

The High Line was transformed from an abandoned elevated freight railway into a linear park, designed by landscape architects James Corner Field Operations.

Question 46: The country's very first planned park

Central Park, New York (Correct answer)
Washington Park, Chicago
Golden Gate Park, San Francisco
Yosemite Park, California

Correct answer: Central Park, New York

Central Park in New York City holds the distinction of being the first major landscaped public park in the United States. Designed by Frederick Law Olmsted and Calvert Vaux, it was conceived and developed in the mid-19th century as a planned urban oasis, setting a precedent for public park design across the country.

Question 47: The concept of 'edge effect' in ecology refers to:

Increased species diversity at habitat boundaries (Correct answer)
Decreased productivity near water bodies
Erosion at the margins of disturbed land
Temperature drop at forest edges

Correct answer: Increased species diversity at habitat boundaries

The edge effect describes the tendency for greater species richness and density at the boundary between two adjacent habitat types.

Question 48: Which grading technique is used to direct stormwater away from a building's foundation?

Inverted crown
Swale centering
Berm impoundment
Positive drainage slope (Correct answer)

Correct answer: Positive drainage slope

Positive drainage slope directs water away from structures by grading the ground surface to fall at least 2% away from the foundation.

Question 49: What was the primary design philosophy behind the City Beautiful movement in early 20th-century American urban design?

Civic grandeur through monumental civic spaces, parks, and boulevards (Correct answer)
High-density housing reform
Industrial efficiency and grid planning
Automobile-oriented suburbs

Correct answer: Civic grandeur through monumental civic spaces, parks, and boulevards

The City Beautiful movement promoted civic improvement through formal, monumental design including grand boulevards, parks, and civic plazas to inspire civic pride.

Question 50: This process chooses the best site use and development.

Site Analysis
Development Sustainability Process (Correct answer)
Site Selection Process
Site Planning

Correct answer: Development Sustainability Process

The Development Sustainability Process involves evaluating potential sites and their uses to ensure long-term environmental, social, and economic viability. It aims to select and plan development that meets current needs without compromising the ability of future generations to meet their own needs, making it the process for choosing the 'best' site use and development from a holistic perspective.

Question 51: the entirety of the environment's nonliving components as well as the group of species that make up a community.

Population
Ecosystem (Correct answer)
Habitat
Community

Correct answer: Ecosystem

An ecosystem is defined as a biological community of interacting organisms (the biotic components) and their physical environment (the abiotic components). This includes both the living species and all the non-living factors like water, soil, and sunlight. The question's description perfectly aligns with the comprehensive definition of an ecosystem.

Question 52: In landscape architectural theory, what does 'genius loci' mean?

The original topography of a site
The most prominent plant in a garden
The spirit or character of a place (Correct answer)
A Latin term for grid planning

Correct answer: The spirit or character of a place

Genius loci is a Latin concept meaning the 'spirit of place' — the distinctive atmospheric and character qualities that make a specific location unique.

Question 53: What is the recommended minimum soil depth for growing most large shade trees?

12 inches
36 inches (Correct answer)
18 inches
60 inches

Correct answer: 36 inches

Large shade trees typically require a minimum of 36 inches (3 feet) of suitable soil depth to support adequate root development.

Question 54: In planting design, a 'drifts' planting pattern is best described as:

Repetitive groups of plants arranged in elongated, irregular masses (Correct answer)
A formal grid of identical shrubs
Single specimens placed at focal points
Alternating rows of contrasting species

Correct answer: Repetitive groups of plants arranged in elongated, irregular masses

Drifts are elongated, irregular groupings of the same plant species that create naturalistic, flowing compositions in the landscape.

Question 55: Which type of plant adaptation is most commonly found in xeric (dry) environments?

Large, thin leaves to maximize photosynthesis
Shallow widespread root systems to capture rainfall
High stomatal density to increase gas exchange
Thick waxy cuticles and succulent tissue to reduce water loss (Correct answer)

Correct answer: Thick waxy cuticles and succulent tissue to reduce water loss

Xerophytes adapt to drought through thick waxy cuticles, succulence, and reduced leaf area to minimize transpiration water loss.

Question 56: What is 'pH' measuring when applied to soil in landscape horticulture?

Percentage of humus
Phosphorus content
Pore space ratio
Relative acidity or alkalinity (Correct answer)

Correct answer: Relative acidity or alkalinity

Soil pH measures the relative acidity or alkalinity on a scale of 0–14, with 7 being neutral; most landscape plants prefer a range of 6.0–7.0.

Question 57: In the context of urban ecology, which landscape feature most effectively reduces the urban heat island effect?

Tree canopy cover and green roofs (Correct answer)
Underground stormwater storage
Permeable concrete pathways
Reflective pavement coatings

Correct answer: Tree canopy cover and green roofs

Tree canopy and green roofs reduce urban heat islands through evapotranspiration and shading, lowering surface and air temperatures significantly.

Question 58: In landscape ecology, a 'corridor' primarily functions to:

Increase urban heat island effect
Block invasive species migration
Connect fragmented habitat patches (Correct answer)
Reduce surface water runoff

Correct answer: Connect fragmented habitat patches

Corridors link isolated habitat patches, facilitating wildlife movement, gene flow, and species recolonization.

Question 59: In urban design, 'defensible space' theory was developed by which theorist?

William H. Whyte
Jane Jacobs
Oscar Newman (Correct answer)
Kevin Lynch

Correct answer: Oscar Newman

Oscar Newman introduced defensible space theory, emphasizing how physical design can reduce crime through territorial definition.

Question 60: Which concept describes the ability of an ecosystem to return to its original state after a disturbance?

Redundancy
Resistance
Resilience (Correct answer)
Robustness

Correct answer: Resilience

Ecological resilience is the capacity of an ecosystem to recover and return to its pre-disturbance structure and function after being disturbed.

Question 61: The 'triple bottom line' framework evaluates sustainable design projects based on:

Cost, schedule, and construction quality
Environmental performance, social equity, and economic viability (Correct answer)
Safety, accessibility, and long-term maintenance requirements
Form, function, and aesthetic quality

Correct answer: Environmental performance, social equity, and economic viability

The triple bottom line framework — often summarized as 'people, planet, prosperity' — assesses projects simultaneously on environmental sustainability, social equity, and economic viability.

Question 62: In stormwater management design, a 'bioswale' differs from a standard drainage swale primarily because it:

Is designed exclusively for industrial sites
Is lined with impermeable concrete
Uses vegetation, soil, and sometimes compost to slow, filter, and infiltrate runoff (Correct answer)
Only functions during large storm events

Correct answer: Uses vegetation, soil, and sometimes compost to slow, filter, and infiltrate runoff

A bioswale incorporates engineered soil media and selected vegetation to biologically and physically filter pollutants from runoff while promoting infiltration, unlike a hard-lined drainage swale.

Question 63: Frequently brought in after building construction and usually employed by a nursery, but they may or may not have a formal college education.

Plant List
Rules of Drainage
Templates
Landscape Designers (Correct answer)

Correct answer: Landscape Designers

Landscape designers often focus on the aesthetic and functional arrangement of plants and hardscaping, frequently working on residential or smaller commercial projects. Unlike licensed landscape architects, they may not require a formal college degree or licensure, often gaining expertise through practical experience or specialized certifications. They are commonly associated with nurseries or design-build firms.

Question 64: Which design movement emphasized naturalistic, curvilinear forms and the picturesque aesthetic in 18th-century English gardens?

Italian Renaissance garden style
English Landscape Garden movement (Correct answer)
French Formal style
Arts and Crafts movement

Correct answer: English Landscape Garden movement

The English Landscape Garden movement, led by figures like Capability Brown, rejected formal axes in favor of naturalistic, pastoral scenes with curved lakes and rolling lawns.

Question 65: What is the primary purpose of a 'detention basin' in stormwater management?

Permanently store water for irrigation
Filter pollutants through vegetation
Temporarily hold stormwater and release it slowly to reduce peak flow (Correct answer)
Provide habitat for aquatic species year-round

Correct answer: Temporarily hold stormwater and release it slowly to reduce peak flow

A detention basin temporarily stores stormwater during a rain event and releases it slowly, reducing downstream peak flow rates.

Question 66: The military settlements of Spain

Laws of the Indies
Presidio (Correct answer)
Missions
Pueblo

Correct answer: Presidio

Presidios were fortified military garrisons established by the Spanish in their colonies, particularly in the Americas. Their primary purpose was to protect Spanish missions, pueblos, and trade routes from hostile indigenous groups and other European powers. These settlements served as centers of military power and control in the frontier regions.

Question 67: Which land use planning tool designates specific zones for residential, commercial, or industrial use to guide development?

Zoning Ordinance (Correct answer)
Subdivision Map Act
Environmental Impact Report (EIR)
Comprehensive General Plan

Correct answer: Zoning Ordinance

A Zoning Ordinance is a local law that regulates land use by dividing a jurisdiction into districts with specific permitted uses, setbacks, and development standards.

Question 68: What is the primary benefit of permeable pavement in sustainable landscape design?

Higher load-bearing capacity for heavy vehicle traffic
Allowing stormwater to infiltrate through the surface into the ground below (Correct answer)
Lower initial installation cost compared to traditional asphalt
Reducing the need for vegetation elsewhere on the site

Correct answer: Allowing stormwater to infiltrate through the surface into the ground below

Permeable pavement allows stormwater to pass through the surface into underlying aggregate layers and then into the soil, reducing runoff volume and recharging groundwater.

Question 69: Native plant species are preferred in sustainable landscape design primarily because they:

Always produce more colorful flowers than exotic cultivars
Are adapted to local climate and soils, requiring less water and supporting native wildlife (Correct answer)
Grow faster than non-native ornamental species
Are always less expensive to purchase than non-native nursery stock

Correct answer: Are adapted to local climate and soils, requiring less water and supporting native wildlife

Native plants evolved with local climate, soils, insects, and wildlife over millennia, making them better adapted to local conditions, requiring less supplemental water and inputs, and supporting native pollinators and fauna.

Question 70: What is a bioswale primarily designed to do?

Provide outdoor security lighting corridors
Provide structural support for retaining walls
Increase impervious surface area along roadways
Channel and filter stormwater runoff through vegetation and soil (Correct answer)

Correct answer: Channel and filter stormwater runoff through vegetation and soil

Bioswales are vegetated channels designed to slow, filter, and infiltrate stormwater runoff, removing pollutants through biofiltration and sedimentation.

Question 71: Which pruning technique involves the removal of a branch back to its point of origin at the trunk or main limb?

Crown raising
Thinning cut (Correct answer)
Heading cut
Pollarding

Correct answer: Thinning cut

A thinning cut removes an entire branch back to its point of origin, reducing density without stimulating excessive regrowth.

Question 72: The intermediate disturbance hypothesis predicts that species diversity is highest when:

Disturbance is completely absent for long periods
Only two dominant species compete
Disturbance frequency is very high and intense
Disturbance occurs at intermediate frequency and intensity (Correct answer)

Correct answer: Disturbance occurs at intermediate frequency and intensity

The intermediate disturbance hypothesis states that moderate disturbance levels prevent competitive exclusion while allowing recovery, maximizing species diversity.

Question 73: Which planting technique involves grouping plants of the same species together for visual impact?

Drifting
Spotting
Massing (Correct answer)
Alternating

Correct answer: Massing

Massing groups multiple plants of the same species together to create bold, unified visual statements in the landscape.

Question 74: Which of the following best describes the urban heat island effect?

Reduced wind speeds caused by urban building configurations
The effect of tall buildings shading urban streets
Higher temperatures in urban areas compared to surrounding rural areas due to heat-absorbing surfaces (Correct answer)
The cooling effect created by urban parks and green spaces

Correct answer: Higher temperatures in urban areas compared to surrounding rural areas due to heat-absorbing surfaces

The urban heat island effect occurs because dark, impervious urban surfaces absorb and re-emit solar radiation as heat, making cities significantly warmer than surrounding rural areas.

Question 75: Which nutrient deficiency typically causes yellowing of leaves (chlorosis) in plants?

Phosphorus
Potassium
Iron or Nitrogen (Correct answer)
Calcium

Correct answer: Iron or Nitrogen

Chlorosis (yellowing) is most commonly caused by iron or nitrogen deficiency, as both are essential for chlorophyll production.

Question 76: In the context of landscape construction, a 'batter board' is used to:

Calculate cut-and-fill volumes
Support erosion control fabric on slopes
Establish reference lines and elevations during layout (Correct answer)
Measure soil compaction resistance

Correct answer: Establish reference lines and elevations during layout

Batter boards are temporary wooden frames erected at corners of a construction layout to hold strings that define building lines and elevations.

Question 77: Which 20th-century landscape architect pioneered the use of human movement and water in public spaces through works like the Lovejoy Fountain in Portland?

Ian McHarg
Thomas Church
Garret Eckbo
Lawrence Halprin (Correct answer)

Correct answer: Lawrence Halprin

Lawrence Halprin designed the Ira Keller Fountain and Lovejoy Fountain in Portland, pioneering an experiential, choreographic approach to public landscape design.

Question 78: Interior design licensure exams began when?

Nov. 11, 1994
Aug. 22, 1983 (Correct answer)
Aug. 23, 1982
Oct. 5, 1994

Correct answer: Aug. 22, 1983

The first Interior Design Licensure Examination in the Philippines was conducted on August 22, 1983. This date marks a significant moment in the professionalization of interior design in the country. It established a formal and standardized process for individuals to obtain their professional licenses.

Question 79: Which material is typically used as a flexible base course under interlocking concrete pavers?

Dense-graded aggregate base (Correct answer)
Portland cement concrete
Compacted topsoil
Sand-set mortar

Correct answer: Dense-graded aggregate base

Dense-graded aggregate (crushed stone) compacted base is used under interlocking pavers to provide a stable, flexible foundation that distributes loads.

Question 80: In sustainable landscape design, 'ecological connectivity' refers to:

Connecting site irrigation systems to reclaimed water supplies
Installing solar panels on landscape pavilion structures
Linking surface stormwater channels to natural waterways
Creating linked habitat corridors that allow wildlife movement through fragmented landscapes (Correct answer)

Correct answer: Creating linked habitat corridors that allow wildlife movement through fragmented landscapes

Ecological connectivity involves designing linked habitat corridors and green spaces that allow wildlife to move through otherwise fragmented urban or suburban landscapes.

Question 81: The 'CPTED' acronym in urban design stands for what crime prevention approach?

Comprehensive Planning for Traffic and Environmental Development
City Planning Through Ecological Detailing
Crime Prevention Through Environmental Design (Correct answer)
Community Planning Through Environmental Design

Correct answer: Crime Prevention Through Environmental Design

CPTED (Crime Prevention Through Environmental Design) uses design strategies like lighting, sightlines, and territorial definition to deter crime.

Question 82: The term 'phenology' in ecology refers to the study of:

Soil formation and development processes
Seasonal timing of biological events (Correct answer)
Genetic variation within populations
Sound production by animals in ecosystems

Correct answer: Seasonal timing of biological events

Phenology studies the timing of cyclical biological events—such as flowering, migration, and leaf-out—and their relationship to climate and season.

Question 83: The 'Rational Method' (Q = CiA) is used in site planning to calculate:

Sediment yield from a disturbed construction site
Groundwater recharge volume beneath a site
Soil percolation rates for septic system design
Peak stormwater runoff from a drainage area (Correct answer)

Correct answer: Peak stormwater runoff from a drainage area

The Rational Method estimates peak runoff (Q) as the product of runoff coefficient (C), rainfall intensity (i), and drainage area (A).

Question 84: Frederick Law Olmsted's 'Emerald Necklace' park system is located in which US city?

New York City
Philadelphia
Chicago
Boston (Correct answer)

Correct answer: Boston

The Emerald Necklace is a chain of parks and parkways in Boston, Massachusetts, designed by Olmsted connecting Franklin Park to the Boston Common.

Question 85: Which principle of visual design describes the recurrence of similar elements at regular intervals to create a sense of movement and cohesion?

Unity
Rhythm (Correct answer)
Dominance
Emphasis

Correct answer: Rhythm

Rhythm in landscape design is achieved by repeating plants, colors, textures, or forms at regular intervals, guiding the eye through the composition and creating a sense of movement.

Question 86: Which early 20th-century California landscape architect is known for pioneering outdoor living concepts and the informal garden suited to Western lifestyles?

Thomas Church (Correct answer)
Fletcher Steele
Lawrence Halprin
Garret Eckbo

Correct answer: Thomas Church

Thomas Church pioneered the 'California style' — informal, functional outdoor living spaces suited to the climate and casual lifestyle of the American West.

Question 87: Which of the following best describes 'adaptive management' in sustainable landscape practice?

Designing landscapes that never require any maintenance inputs
A management approach that incorporates monitoring, evaluation, and strategy adjustment based on observed outcomes (Correct answer)
Adapting traditional historical garden styles to contemporary sites
Using only plant species classified as adaptive to multiple climate zones

Correct answer: A management approach that incorporates monitoring, evaluation, and strategy adjustment based on observed outcomes

Adaptive management is an iterative, science-based approach that involves monitoring landscape performance, evaluating outcomes against stated goals, and adjusting management strategies based on what is learned over time.

Question 88: Which ADA requirement applies to accessible parking spaces adjacent to a building entrance?

1 accessible space per every 25 total spaces minimum
Maximum 2% slope in all directions (Correct answer)
Maximum 5% cross slope and 2% running slope
8-foot width with 5-foot access aisle for van spaces

Correct answer: Maximum 2% slope in all directions

ADA standards require accessible parking spaces and their access aisles to have a maximum slope of 1:48 (approximately 2%) in any direction.

Question 89: In sustainable landscape practice, what is the primary environmental advantage of using recycled or reclaimed materials?

Reclaimed materials always cost less than new materials on the market
They require significantly less maintenance over the life of the project
Recycled materials are always structurally superior to newly manufactured materials
They reduce demand for virgin resources and decrease embodied energy and carbon emissions (Correct answer)

Correct answer: They reduce demand for virgin resources and decrease embodied energy and carbon emissions

Recycled and reclaimed materials reduce the extraction of virgin natural resources and minimize the embodied energy and greenhouse gas emissions associated with manufacturing new materials from raw inputs.

Question 90: Who designed Dumbarton Oaks garden in Washington D.C., a landmark of American formal garden design?

Ellen Biddle Shipman
Beatrix Farrand (Correct answer)
Florence Yoch
Martha Brookes Hutcheson

Correct answer: Beatrix Farrand

Beatrix Farrand designed the gardens of Dumbarton Oaks starting in 1921, blending formal terraced structure with naturalistic planting in a celebrated synthesis.

Question 91: Which of the following sums up a community the best?

prairie grassland in Wyoming
loggerhead sea turtles in Atlantic
sharks, groupers, anemones and shrimp on a coral reef (Correct answer)
decorator crabs on the seafloor

Correct answer: sharks, groupers, anemones and shrimp on a coral reef

A community consists of different populations of various species living and interacting in the same area. Option D describes multiple distinct species (sharks, groupers, anemones, shrimp) coexisting and interacting within a specific habitat (a coral reef). The other options describe either a single population or a broad biome, not an interacting group of diverse species.

Question 92: What does 'xeriscaping' primarily aim to achieve in landscape design?

Reduce water usage through drought-tolerant planting (Correct answer)
Improve soil fertility over time
Increase canopy cover in urban areas
Maximize biodiversity

Correct answer: Reduce water usage through drought-tolerant planting

Xeriscaping is a landscaping approach that reduces or eliminates the need for supplemental irrigation by using drought-tolerant plants.

Question 93: Which soil amendment is commonly used to improve drainage in heavy clay soils?

Compost
Vermiculite
Peat moss
Coarse sand or grit (Correct answer)

Correct answer: Coarse sand or grit

Coarse sand or grit added to clay soils increases pore space, improving drainage and aeration.

Question 94: In sustainable landscape design, what does the Sustainable Sites Initiative (SITES) primarily certify?

Sustainable land development and management practices in the landscape (Correct answer)
The energy efficiency of buildings on a site
The organic certification of plants used in a landscape
The structural integrity of site furnishings

Correct answer: Sustainable land development and management practices in the landscape

SITES is a comprehensive rating system developed to evaluate and certify sustainable land design and management practices, functioning as a landscape-focused equivalent to LEED.

Question 95: Which of the following landscape elements most directly reduces stormwater runoff volume from a building?

Concrete plinth surrounding a building foundation
A decorative fence around the building perimeter
A green roof with growing media and vegetation (Correct answer)
A gravel mulch pathway leading to the entrance

Correct answer: A green roof with growing media and vegetation

Green roofs absorb and retain rainfall in their growing media and through plant evapotranspiration, significantly reducing the volume of stormwater runoff from building rooftops.

Question 96: Which USDA Hardiness Zone covers most of the Pacific Northwest coastal region of the US?

Zone 6
Zone 3
Zone 8 (Correct answer)
Zone 11

Correct answer: Zone 8

The Pacific Northwest coast falls primarily in USDA Hardiness Zone 8, with mild winters rarely dropping below 10°F.

Question 97: What does 'life cycle assessment' (LCA) evaluate in sustainable materials selection?

The time required to complete a landscape construction project
The duration of a contractor's materials warranty
The expected service life of a landscape plant species in the local climate
The environmental impacts of a material from raw material extraction through end-of-life disposal (Correct answer)

Correct answer: The environmental impacts of a material from raw material extraction through end-of-life disposal

Life cycle assessment (LCA) is a comprehensive analysis of a material's environmental impacts across its entire life cycle, from raw material extraction through manufacturing, transportation, use, and end-of-life disposal.

Question 98: Which concept, popularized by landscape urbanist Charles Waldheim, describes the use of landscape as the primary infrastructure for organizing contemporary cities?

Landscape Urbanism (Correct answer)
New Urbanism
Ecological Urbanism
Smart Growth

Correct answer: Landscape Urbanism

Landscape Urbanism, associated with Charles Waldheim and others, positions landscape — rather than architecture — as the primary medium for organizing and structuring the contemporary city.

Question 99: Which stormwater management approach involves capturing and storing rainwater from rooftops for later non-potable reuse?

Rainwater harvesting with cisterns (Correct answer)
Detention basin with outlet control
Constructed wetland treatment
Bioretention basin design

Correct answer: Rainwater harvesting with cisterns

Rainwater harvesting captures and stores precipitation from rooftops in cisterns or tanks for later use in landscape irrigation or other non-potable applications, reducing demand on municipal water supplies.

Question 100: Which LEED credit category is most directly associated with landscape architecture's contribution to sustainable site design?

Materials and Resources
Indoor Environmental Quality
Energy and Atmosphere
Sustainable Sites (Correct answer)

Correct answer: Sustainable Sites

The Sustainable Sites credit category in LEED directly addresses site ecology, stormwater management, heat island reduction, and landscape design practices.

Question 101: Which landscape architecture document first articulated ecological planning as a methodology for urban design?

Design with Nature by Ian McHarg (Correct answer)
The Athens Charter
A Pattern Language by Christopher Alexander
The Death and Life of Great American Cities by Jane Jacobs

Correct answer: Design with Nature by Ian McHarg

'Design with Nature' (1969) by Ian McHarg established layer-based ecological analysis as the foundation for landscape and urban planning decisions.

Bachelor of Landscape Architecture (BLArch) Comprehensive Exam

The BLArch comprehensive assessment tests knowledge across the core domains of a Bachelor of Landscape Architecture degree, including design theory, environmental science, horticulture, construction documentation, and sustainable practices. It prepares students for professional licensure and the LARE (Landscape Architect Registration Examination).

Questions

35 min

Time Limit

70%

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