24
RCMultiple Choice

Catalysts — Cumulative exam

Question 24 • PA Human Anatomy & Physiology A 2026-2027 SMITH IC

By which process do plants obtain carbon from the atmosphere?

Answer
A
photosynthesis
B
cellular respiration
C
decomposition
D
consumption

Explanation

Plants obtain carbon from atmospheric carbon dioxide during photosynthesis. They take in carbon dioxide and use its carbon to make sugars. Cellular respiration releases carbon dioxide, while decomposition and consumption do not describe how plants take carbon from the atmosphere.

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