Which of the Following Best Explains Why Very Few CAM

question 73

Multiple Choice

Which of the following best explains why very few CAM plants are tall?

• A) They have difficulty moving water and minerals to the top of the plant during the day.
• B) They would be unable to supply sufficient sucrose for active transport of minerals into the roots during the day or night.
• C) Transpiration occurs only at night, and this would cause a highly negative Ψ in the roots of a tall plant during the day.
• D) Since the stomata are closed in the leaves, the Casparian strip is closed in the endodermis of the root.
• E) With the stomata open at night, the transpiration rate would limit plant height.

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