NEET BIOLOGY

Detailed explanation-1: -Since the stomata allows the carbon dioxide to enter and oxygen to exit therefore if there will be sudden increase in carbon dioxide concentration around the leaf will happen then the stomata will get closed so that the excess gas does not enter the cell and this will further decrease the rate of transpiration too.

Detailed explanation-2: -Increased carbon dioxide concentration inhibits potassium ion influx into the guard cells, while protons and malate ions combine to form malic acid, which is converted to starch.

Detailed explanation-3: -High environmental CO2 concentration induces stomatal closure, whereas low environmental CO2 concentration triggers stomatal opening. Despite its importance, little is known about the molecular mechanisms underlying the initial response of stomata to CO2.

Detailed explanation-4: -As the air’s CO2 content rises, many plants reduce their stomatal apertures, because with more CO2 in the air, they don’t need to open their stomates as wide as they do at lower atmospheric CO2 concentrations to allow for sufficient inward diffusion of CO2 for use in photosynthesis.