FREE Certified Arborist Tree Biology Questions and Answers

Question 1

Mycorrhizae refers to the beneficial relationships between the roots of trees and ________.

Accepted Answer

fungi

Answer

mulch

Answer

grasses

Answer

insects

Question 2

What is a highly fertile region around growing roots?

Accepted Answer

Rhizosphere

Answer

Substrate

Answer

Macropore

Answer

Periderm

Question 3

What factor in the atmosphere leads to the greenhouse effect when present in excess amounts?

Accepted Answer

Carbon

Answer

Helium

Answer

Nitrogen

Answer

Oxygen

Question 4

What term describes a close collection of multiple palm flowers?

Accepted Answer

Inflorescence

Answer

Monocot

Answer

Petiole

Answer

Frond

Question 5

What is a turgid leaf?

Accepted Answer

Fully Hydrated

Answer

Bipinnate

Answer

Serrated

Answer

Dehydrated

Question 6

Although they are made in the ____, cytokinins are crucial for the growth of the ____.

Accepted Answer

roots, shoots

Answer

roots, leaves

Answer

shoots, trunk

Answer

shoots, roots

Question 7

What is the gradual process by which a tree adapts to changes in its surroundings?

Accepted Answer

Acclimation

Answer

Selection

Answer

Hardening off

Answer

Aggregation

Question 8

When a leaf exhibits chlorosis, it is deficient in:

Accepted Answer

Chlorophyll

Answer

Water

Answer

Vitamin D

Answer

Glucose

Question 9

Which arrangement, with a petiolule for each leaflet, places the leaflets of a compound leaf along a single stem?

Accepted Answer

Pinnate

Answer

Palmate

Answer

Bipalmate

Answer

Bipinnate

Question 10

What distinguishes simple leaves from compound leaves?

Accepted Answer

A compound leaf may have many leaflets, whereas a simple leaf just has one leaf blade.

Answer

A compound leaf has two midribs, whereas a simple leaf only has one.

Answer

A compound leaf is oblong in shape, whereas a basic leaf is spherical.

Answer

A simple leaf has no serrations.