AP BIOLOGY

PHOTOSYNTHESIS

C 4 PHOTOSYNTHESIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why do CAM plants close their stomata during the day?
A
It just happens
B
To reduce evaporation
C
To collect Carbon Dioxide
D
None of the above
Explanation: 

Detailed explanation-1: -CAM plants keep stomata closed in daytime, thus reducing loss of water. They can do this because they. fix CO2 into organic acids during the night.

Detailed explanation-2: -CAM plants usually close their stomata during the day and open them at night. When the stomata are closed, water loss is prevented by the process of evaporation. This process prevents carbon dioxide gas from entering the plant’s leaves.

Detailed explanation-3: -The high temperature will make the plant close its stomata to reduce water loss by evaporation. If the stomata is closed, the oxygen from photosynthesis will build up inside the leaf while the carbon dioxide will not get into the leaf.

Detailed explanation-4: -If it is too hot or dry, plants often close their stomata to prevent water loss. This prevents CO2 from entering the leaf, as well as prevents O2 from exiting.

There is 1 question to complete.