Biology Test Biology Ecology and Evolution 2

Question 1

Which ecological concept describes the role and position a species occupies in its environment, including its habitat and interactions?

Accepted Answer

Ecological niche

Answer

An ecological niche encompasses all the biotic and abiotic conditions a species needs to survive and reproduce, including its functional role.

Question 2

What type of symbiosis occurs when one organism benefits while the other is neither helped nor harmed?

Accepted Answer

Commensalism

Answer

Commensalism is a symbiotic relationship where one organism benefits and the other is unaffected, such as barnacles on whale skin.

Question 3

In the Hardy-Weinberg equilibrium model, which condition would cause allele frequencies to change over time?

Accepted Answer

Natural selection

Answer

Natural selection causes differential reproductive success based on phenotype, which shifts allele frequencies and violates Hardy-Weinberg equilibrium.

Question 4

What is the term for the evolutionary process by which two species influence each other's evolution over time?

Accepted Answer

Coevolution

Answer

Coevolution occurs when two or more species reciprocally affect each other's evolution, such as flowers and their pollinators.

Question 5

Which level of the energy pyramid contains the greatest amount of stored energy?

Accepted Answer

Primary producers

Answer

Primary producers (plants) occupy the base of the energy pyramid and contain the most stored energy because energy is lost at each trophic level.

Biology Practice Test

Biology Practice Test

Biology Test Biology Ecology and Evolution 2