9
practice testMultiple Choice

Practice Test

Question 9 • CMS 2026-2027 Biology CREDIT RECOVERY

Barnacles and whales have a commensalistic relationship in which barnacles benefit. What would most likely happen to the whale population if the barnacle population decreased?

Answer
A
decrease
B
stay the same
C
become extinct
D
increase

Explanation

In a commensalistic relationship, barnacles benefit while the whales are neither helped nor harmed. So, if the barnacle population decreased, the whale population would most likely stay the same.

AI-written and checked against the verified answer.

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