17
QuizMultiple Choice

Organisms and the Environment — Test

Question 17 • Biology

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

Answer
A
Plants use carbon when they decompose, and animals release carbon when they decompose.
B
Animals fix carbon and release oxygen, and plants release carbon and use oxygen.
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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