FREE Ecology Community Interactions Questions and Answers

Question 1

Which type of interspecific interaction benefits one species while the other is unaffected?

Accepted Answer

Commensalism

Answer

Mutualism

Answer

Parasitism

Answer

Competition

Question 2

A cleaner fish removes parasites from a larger reef fish. The cleaner fish gets food, and the reef fish benefits from parasite removal. This is an example of which type of community interaction?

Accepted Answer

Mutualism

Answer

Predation

Answer

Amensalism

Answer

Commensalism

Question 3

Two species of birds occupy the same niche in a forest, feeding on similar insects. Over time, one species develops a slightly different foraging strategy, focusing on insects found in different parts of the trees. This scenario best illustrates which ecological principle?

Accepted Answer

Resource partitioning

Answer

Competitive exclusion principle

Answer

Character displacement

Answer

Interspecific competition

Question 4

A population of wolves preys on a population of deer. An increase in the wolf population leads to a decrease in the deer population, which subsequently causes a decrease in the wolf population due to food scarcity. This dynamic is an example of:

Accepted Answer

Top-down control

Answer

Bottom-up control

Answer

Trophic cascade

Answer

Coevolution

Question 5

Which of the following statements accurately describes the competitive exclusion principle?

Accepted Answer

Two species cannot coexist indefinitely if they occupy exactly the same niche.

Answer

Competition always leads to the extinction of one species.

Answer

Species evolve to occupy broader niches to avoid competition.

Answer

Predator-prey relationships are a form of competitive exclusion.

Question 6

Epiphytes (plants that grow on other plants) in a tropical rainforest benefit from increased light exposure and elevation without harming their host tree. This interaction is best classified as:

Accepted Answer

Commensalism

Answer

Parasitism

Answer

Mutualism

Answer

Amensalism