SSC MTS EXAM

Detailed explanation-1: -However, when stomata are open, the inside of the plant is exposed to the elements and water from the plant is lost into the surrounding air, which can dry out the plant. Plants, therefore, must balance the intake of carbon dioxide with water vapor loss by controlling how long the stomata remain open.

Detailed explanation-2: -Stomata function in regulation of gas exchange, in terms of both photosynthesis and water uptake. Carbon dioxide passing through the stoma diffuses to the chloroplasts of photosynthetic cells within and is used in the dark reactions of photosynthesis. Oxygen, a by-product of photosynthesis, exits via the stoma.

Detailed explanation-3: -Stomata regulate gas exchange between the plant and environment and control of water loss by changing the size of the stomatal pore. This stomatal movement is affected by several environmental stimuli, such as relative humidity, CO2 concentration, and light intensity.