Question

A plant can open or close its stomata in response to environmental conditions. Which best explains how the ability to open and close stomata benefits a plant?

A.
During a drought, stomata can be closed to prevent excessive water loss through transpiration.
B.
During the daytime, stomata can be closed to increase the rate of photosynthetic reactions.
C.
During the nighttime, stomata can be opened to release the carbon dioxide produced by photosynthesis.
D.
During a rainstorm, stomata can be opened to absorb additional water through osmosis.

Answer 1

A plant can open or close its stomata to regulate water loss and gas exchange. Closing stomata during a drought helps the plant conserve water, while opening them during the day allows for photosynthesis.

A. During a drought, stomata can be closed to prevent excessive water loss through transpiration.