Question

exam lesson name: introduction to oceanography
exam number: 700793rr
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question 16 of 20 :
select the best answer for the question.

1. a ______ consumer is a heterotroph that directly eats an autotroph.

○ a. quaternary
○ b. tertiary
○ c. primary
○ d. secondary

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Explanation:

In an ecosystem, autotrophs (like plants, algae) are producers. Consumers that directly eat autotrophs are called primary consumers. Secondary consumers eat primary consumers, tertiary eat secondary, and quaternary eat tertiary. So the consumer that directly eats an autotroph is a primary consumer.

Answer:

C. primary