Question

Stomata remain open at night in the

• A. $C_3$ plants.
• B. $C_4$ plants.
• C. CAM plants.
• D. Hydrophytic plants.

Answer 1

The correct option is C CAM plants.

In CAM plants, stomata are open during the night and closed during day time. This is an adaptation of cutting transpiration loss of water. CAM plants grow in deserts and are exposed to high temperatures.Their stomata are open during the night for carbon dioxide uptake but closed during the day to prevent water loss.

Thus, the correct answer is option C.