CLEP Biology Ecology & Evolutionary Processes 3

Question 1

Which ecological concept describes the maximum population size an environment can sustain indefinitely?

Accepted Answer

Carrying capacity

Answer

Carrying capacity (K) is the maximum population size that an environment can support given the available resources such as food, water, and space.

Question 2

The Hardy-Weinberg equilibrium is maintained when which of the following conditions is met?

Accepted Answer

Mating is random and no evolutionary forces act

Answer

Hardy-Weinberg equilibrium requires random mating and the absence of mutation, gene flow, genetic drift, and natural selection.

Question 3

Which type of ecological succession begins in an area that has never supported life, such as bare rock?

Accepted Answer

Primary succession

Answer

Primary succession starts in lifeless areas with no soil, beginning with pioneer species such as lichens that break down rock to create soil.

Question 4

An organism that occupies a broad ecological niche and tolerates a wide range of environmental conditions is called:

Accepted Answer

A generalist

Answer

Generalists (eurytopic species) can exploit many different types of food, habitats, and conditions, making them highly adaptable compared to specialists.

Question 5

In the context of evolution, convergent evolution produces organisms that are:

Accepted Answer

Distantly related but with similar traits due to similar environments

Answer

Convergent evolution occurs when unrelated species independently evolve similar traits in response to similar environmental pressures, such as dolphin and shark body shapes.

CLEP Practice Test

CLEP Practice Test

CLEP Biology Ecology & Evolutionary Processes 3