HORTICULTURE

Detailed explanation-1: -In many plants, when the outside temperature is warm and water evaporates more readily, plants close their stomata to prevent excessive water loss. Closing the stomata, however, can disrupt plant growth by preventing carbon dioxide from entering the leaves and thereby reducing photosynthesis.

Detailed explanation-2: -Opening stomata when the surrounding air is more humid means that less water will evaporate from the plant leaves, but opening them when temperatures are warmer means more evaporation will occur. Likewise, if a plant is already dehydrated, it may close its stomata to prevent further water loss.