Why Are C₄ Plants Able to Photosynthesize with No Apparent

question 22

Multiple Choice

Why are C₄ plants able to photosynthesize with no apparent photorespiration?

• A)They do not participate in the Calvin cycle.
• B)They keep their stomata open most of the time in hot,dry climates,which allows for water loss to prevent photorespiration.
• C)They keep their stomata closed most of the time in hot,dry climates,which conserves water and oxygen to inhibit photorespiration.
• D)They do not use rubisco to fix CO₂.
• E)They exclude oxygen from their tissues.

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