BOTANY

Detailed explanation-1: -Plants close stomata in response to their environment; for example, most plants close their stomata at night. Under drought, plants may also close their stomata to limit the amount of water that evaporates from their leaves.

Detailed explanation-2: -Transpiration is a process that involves loss of water vapour through the stomata of plants. The loss of water vapour from the plant cools the plant down when the weather is very hot, and water from the stem and roots moves upwards or is ‘pulled’ into the leaves.

Detailed explanation-3: -Stomata consist of microscopic pores, each flanked by a pair of guard cells. Guard cells can increase or decrease the size of the pore via changes in their turgor status, hence regulating both CO2 entry into the leaf and transpiration, or the loss of water from the leaf.

Detailed explanation-4: -Stomata are pores constituted by two cells called: Guard cells. Guard cells are hydraulic valves making possible stomata closure and opening. Stomata open or close depending on different factors: Light intensity, light quality, temperature, leaf water status, and intracellular CO2.

Detailed explanation-5: -A particular robust response is the regulation of stomata on leaves, pores through which gas exchange takes place. By closing the stomata, plants can conserve water during periods of drought by reducing loss through evaporation.