Refer to the figure above and then answer the question that follows. -C₄ plants don't perform photorespiration; therefore, they can keep their stomata closed longer when the weather is warm. This seems to be an advantage. Why aren't all plants C₄plants? Refer to the figure above for help. A) C₄plants can't take in any oxygen while the stomata are closed. B) C₄plants must use ATP to shuttle CO₂ to the bundle-sheath cells. C) C₄plants can't take any CO₂while the stomata are closed. D) C₄plants can't take in any water while the stomata are closed.

Question

Quizplus · Accepted Answer

C4 plants, which are being referred to here, use ATP to shuttle CO2 to the bundle-sheath cells, which is an energy-consuming process not required by C3 plants. This additional energy requirement is a disadvantage in environments where energy conservation is critical.

Refer to the Figure Above and Then Answer the Question