CLEP Biology Ecology & Evolutionary Processes

Question 1

Which process best describes natural selection?

Accepted Answer

Differential survival and reproduction based on inherited traits

Answer

Random changes in genes

Answer

Traits gained during an organism's life

Answer

The movement of individuals between populations

Question 2

What is an ecosystem?

Accepted Answer

All organisms and physical environment in a region

Answer

Only animals in an area

Answer

Only plants and animals

Answer

Only non-living elements like soil and water

Question 3

Which of the following contributes directly to evolution?

Accepted Answer

Genetic mutations and variation

Answer

Climate alone

Answer

Physical fitness

Answer

Hibernation behavior

Question 4

Which best describes mutualism?

Accepted Answer

Both organisms benefit

Answer

One organism benefits, the other is harmed

Answer

Both organisms compete for resources

Answer

One organism consumes the other

Question 5

Which factor would most directly limit population growth in a closed ecosystem?

Accepted Answer

Availability of resources

Answer

Predation

Answer

Genetic mutation

Answer

Seasonal migration

Question 6

What is a keystone species?

Accepted Answer

A species that supports many others through ecosystem roles

Answer

A rare species with no impact

Answer

Any top predator

Answer

A species that is about to go extinct

Question 7

Which of the following is a primary producer?

Accepted Answer

Grass

Answer

Mushrooms

Answer

Frogs

Answer

Snakes

Question 8

How is energy transferred in a food web?

Accepted Answer

It decreases as it moves up the food chain

Answer

It increases at each trophic level

Answer

It flows from consumers to producers

Answer

It is constant through all levels

Question 9

Which evidence supports the theory of evolution?

Accepted Answer

Fossils and molecular similarities

Answer

Geographic isolation alone

Answer

Use of tools in primates

Answer

Behavioral adaptation in a single generation