Evolutionary Relationships — Unit test

Question 4 • Basic Biology S2

Which scenario would most likely result in the extinction of one or more species?

Answer

The water temperature of a pond decreases slightly, and the members of the pond populations adapt to the change.

The conditions are abnormally dry for one season in a desert, resulting in the deaths of a few members of a snake population.

A predatory fish is introduced into a lake, resulting in a dramatic decrease in the populations of smaller fish.

A new plant species begins growing in a forest, resulting in a new food resource for many animal populations.

Explanation

A predatory fish that causes a dramatic decline in smaller fish could reduce one prey population so much that it cannot recover, leading to extinction. A slight temperature change that populations adapt to, one dry season that kills only a few snakes, or a new food source are less likely to eliminate a species.

AI-written and checked against the verified answer.

More from this Course

Reproduction

Instruction

Evolutionary Relationships