DENDROLOGY

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: -Light intensity: The transpiration rate is increased due to the increase in light intensity. During daytime in the sunlight, the rate of transpiration is faster. This is because the stomata remains open to allow the inward diffusion of carbon dioxide for photosynthesis.

Detailed explanation-3: -Transpiration rate will be high during the sunny day. Direct sunlight warms up the leaves and causes the stomata to open, thus, more transpiration occurs during the day.

Detailed explanation-4: -There are several reasons why plants utilize transpiration. The direct effect of transpiration is to regulate the temperature of the plant and to provide water for photosynthesis. It also serves to move nutrients and sugars through the vascular tissues of the plant.

Detailed explanation-5: -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.