Why Is Photorespiration More of a Problem for a Plant

question 17

Multiple Choice

Why is photorespiration more of a problem for a plant when their stomata are closed?

• A)Oxygen levels increase from photosynthesis and compete with carbon dioxide for rubisco's active site.
• B)Carbon dioxide levels increase from photosynthesis and compete with oxygen for rubisco's active site.
• C)Water is lost when the stomata are open and is not available to accept electrons from Photosystem I.
• D)Oxygen cannot enter the leaf, blocking normal respiration, so the plants switch to photorespiration.
• E)Glucose cannot leave through the stomata and levels increase inside of the plant cell, causing dehydration by osmosis.

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