HORTICULTURE

Detailed explanation-1: -It is estimated that approximately 99% of the water is lost during transpiration by the plants.

Detailed explanation-2: -A plant does not use most of the water that it absorbs. About 97-99% of the water is lost through transpiration. Transpiration is defined as the physiological loss of water in the form of water vapor, mainly from the stomata in leaves, but also through evaporation from the surfaces of leaves, flowers, and stems.

Detailed explanation-3: -All life forms on Earth require water for survival and growth; and plants are no exception. 90 percent of a plant is made up of water as it requires water for germination of seeds and nutrient absorption.

Detailed explanation-4: -Although plants need water, only a small fraction of the water taken up by their roots is used for growth and metabolism. The remaining 97–99.5 percent is lost by transpiration and guttation. Exudation of xylem sap drops from the tips or margins of some vascular plants’ leaves, such as grasses, is known as guttation.