What is Transpiration ? and Types of Transpiratopn.
What is Transpiration ? The loss of water as water vapour from the aerial parts of the plant is called Transpiration . We know that roots of a plant absorb water and mineral from the soil. This water then flows up the root and through xylem vessels in the stem to the leave. A small amount of water is used by the plant for photosynthesis and other activities. Rest of it evaporates from the surface of spongy mesophyll cells and diffuse out of the pores in the leaves called stomata. Transpiration is different from evaporation. There is a continuous loss of water from the leaves by Transpiration . The water lost from leaves is continuously replaced by more water which flows from leaf xylem vessels. Water flows from xylem vessels to the surface of mesophyll cell of the leaves by two routes. 1. Imbibition :- Most of the water flows directly through the porous cellulose walls of the mesophyll cells. 2. Osmosis :- A small amount of...