(i) Transpiration is the process of movement of water in the xylem tissues and its evaporation through the aerial structures of the plant like leaves and stem. It causes a transpirational pull which help in the movement of water from the roots to the leaves.
(ii)(a) When humidity is decreased, transpiration is increased
(b) By increasing the temperature of the surroundings, we tend to increase the rate of evaporation of water droplets through the leaves by the process of transpiration. On increasing temperature, rate of transpiration also increases.
(iii) Amit is very interested in science subject. He believes in applying practical knowledges into real life experience.