Question Detail

BIO 101 BIO 101 Past Questions Objective Question
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Question

What advantage do CAM plants have in arid environments?
Options
A Use chloroplasts in roots
B Fix CO2 at night to minimize water loss
Correct Answer
C Store light in vacuoles
D Conduct photosynthesis in the mitochondria
Correct Answer

Option B is the correct answer.

Detailed Explanation

CAM plants open their stomata at night to take in CO2 and fix it into organic acids, which are stored. During the day, the stomata close to conserve water, and the CO2 is released internally for the Calvin cycle.

Hint

They separate carbon fixation and the Calvin cycle by time, not by space.

Question Info

Course: BIO 101
Topic: BIO 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 706 of 2556
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