Question

Boojho wants to know Why plants absorb a large quantity of water from the soil, then give it off by transpiration!

Answer 1

Plants absorb minerals and nutrients from the soil in liquid form through Osmosis so they have to absorb much water even to take up small quantities of these nutrients.The excess of water is of no use for the plant so it gets rid of it through transpiration, also evaporation of this excess water from the leaves has a cooling effect on the plant and protects it from scorching in summer that is why in summer there is relatively more transpiration than in winter .

Answer 2

Answer:

Plants absorb water in large quantity because in photosynthesis carbon dioxide and water are used as raw material for the synthesis of glucose. If stomata remains open transpiration takes place continuously i.e. plants synthesize food on the cost of loss of water.