A Biologist Is Studying Three Species of Small Fish (Sp

question 20

Multiple Choice

A biologist is studying three species of small fish (sp 1, sp 2, and sp 3) that cling to the bodies of bigger fish and consume parasites on the larger fish. He conducts an experiment with three treatments. In each treatment, he removes a different one of the small fish species from a large fish and examines the number offspring produced by the large fish. Which of the following conclusions are supported by the data shown in the figure?

• A) Species 1 is a mutualist.
• B) Species 2 is a mutualist.
• C) Species 3 is a mutualist.
• D) Species 1 and 2 are mutualists.
• E) Species 2 and 3 are mutualists.

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Definitions:

Referent

The actual thing or entity in the world that a word, phrase, or symbol represents or refers to.

Amusement Park

A large outdoor area with fairground rides, shows, refreshments, and other entertainment activities.

Ocean

A vast body of salt water that covers almost three-quarters of the Earth's surface.

Concept

A general idea derived from specific instances, serving as a fundamental building block for theories and arguments.