HORTICULTURE

Detailed explanation-1: -Generally, ion and organic solute concentration levels determine the turgor pressure of guard cells and subsequently affect stomatal aperture. Under elevated CO2, stomata tend to close because a greater depolarization seems to appear in GCs.

Detailed explanation-2: -Higher than ambient CO2 concentrations mediate a closure of stomatal pores in plants and conversely, low CO2 concentrations trigger opening of stomatal pores.

Detailed explanation-3: -When the air temperature rises the stomata opens the pores to let carbon dioxide in. After entering through the pores the plant starts preparing food through photosynthesis. This process produces oxygen as a by-product which is poisonous to the plant. Therefore the plants release it out through the stoma.

Detailed explanation-4: -Stomata allow a plant to take in carbon dioxide, which is needed for photosynthesis. They also help to reduce water loss by closing when conditions are hot or dry. Stomata look like tiny mouths which open and close as they assist in transpiration.