Practice question
Question
A green leaf cell contains approximately 20–40 double-membrane organelles. Each contains chlorophyll and carotenoid pigments and possesses thylakoids within a stroma.
Which inference best integrates these observations?
Explanation
Most chloroplasts of green plants occur in leaf mesophyll cells, where approximately 20–40 may occur per cell. Chloroplasts contain chlorophyll and carotenoids that trap light energy required for photosynthesis.
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