HORTICULTURE

Detailed explanation-1: -Water is lost from the aerial regions of plants in the form of water vapor through a biological process, it is called transpiration. Since stomata are closed at night, it is generally believed that transpiration only happens during the day.

Detailed explanation-2: -Plants loose water at significant rates during the night through ‘night-time transpiration’. Night-time transpirational water loss is most likely the consequence of having respiratory CO2 escape at sufficiently high rates through stomata.

Detailed explanation-3: -Direct sunlight warms up the leaves and causes the stomata to open, thus, more transpiration occurs during the day. The transpiration rate is higher on a sunny day compared to a cold dull day.

Detailed explanation-4: -Plant respiration occurs 24 hours per day, but night respiration is more evident since the photosynthesis process ceases. During the night, it is very important that the temperature is cooler than during the day because plants can experience stress.