Which Statement Is Accurate About How C₄ Plants Are Able

question 39

Multiple Choice

Which statement is accurate about how C₄ plants are able to survive hot dry spells during the growing season?

• A) When the stomata close during heat stress RuBP carboxylase is not exposed to the increase in oxygen concentration experienced in the leaf. This allows the plant to avoid trying to use oxygen.
• B) When the stomata close during heat stress RuBP carboxylase is exposed to the increase in oxygen concentration experienced in the leaf. This allows the plant to avoid trying to use oxygen.
• C) When the stomata open during heat stress RuBP carboxylase is not exposed to the increase in oxygen concentration experienced in the leaf. This allows the plant to avoid trying to use oxygen.
• D) When the stomata close during heat stress RuBP carboxylase is exposed to the increase in oxygen concentration experienced in the leaf. This allows the plant to use oxygen for photosynthesis.
• E) When the stomata open during heat stress RuBP carboxylase is not exposed to the increase in oxygen concentration experienced in the leaf. This allows the plant to use oxygen for photosynthesis.

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