Question

Plants can modify their water potential by opening and closing their stomata to modulate the rate of respiration according to environmental conditions. Which of the following environmental conditions would cause the stomata to close?

a) High light intensity
b) Low humidity
c) Low temperature
d) High carbon dioxide concentration

Answer 1

Plants close their stomata under low humidity and drought conditions to conserve water.

Step-by-step explanation:

Plants regulate the opening and closing of stomata to modulate the rate of respiration according to environmental conditions. Stomata close under certain environmental conditions to conserve water. One of these conditions is low humidity, as it indicates a lack of moisture in the air. Stomata also close under drought conditions to prevent excessive water loss.