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Which gas do plants primarily take in from the air to use... | QuestionStock

Representative image for question: Which gas do plants primarily take in from the air to use in photosynthesis?

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Which gas do plants primarily take in from the air to use in photosynthesis?

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Which gas do plants primarily take in from the air to use in photosynthesis?

Options:

Oxygen
Nitrogen
Carbon dioxide
Helium

Correct answer: Carbon dioxide

Explanation: Plants absorb carbon dioxide (CO2) for photosynthesis; the simplified balanced equation fixes six CO2 molecules to produce one glucose molecule (C6H12O6). This CO2 uptake powers carbohydrate synthesis.

Created 2026-03-10T17:34:21.626Z. Updated 2026-03-10T17:34:21.626Z.