2
QuizMultiple Choice

Interdependent Relationships in Ecosystems — Test

Question 2 • TPS EdX Biology

Which statement describes the relationship between plants, animals, and the carbon cycle?

Answer
A
Animals fix carbon and release oxygen, and plants release carbon and use oxygen.
B
Plants use carbon when they decompose, and animals release carbon when they decompose.
C
Plants use carbon and release oxygen, and animals release carbon and use oxygen.
D
Animals fix carbon through respiration, and plants fix carbon through photosynthesis.

Explanation

Plants take in carbon dioxide during photosynthesis, using its carbon to make sugars, and release oxygen. Animals use oxygen for respiration and release carbon dioxide, returning carbon to the atmosphere. This matches “Plants use carbon and release oxygen, and animals release carbon and use oxygen.”

AI-written and checked against the verified answer.

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