C₄ Plants Are Thought to Be More Efficient Than C₃

question 68

Multiple Choice

C₄ plants are thought to be more efficient than C₃ plants because they

• A) make larger sugar molecules from CO₂.
• B) can concentrate the CO₂ in chloroplasts and therefore minimize side reactions with O₂.
• C) can produce sugar molecules at night in addition to during the day.
• D) can live in dry climates.

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