Transpiration is very important for plants because it helps in 

(a) the absorption of water from soil

(b) the cooling of leaves at high temperature

(c) the movement of water and minerals absorbed by roots to various parts of the plant

(d) all of the above

(d): The loss of water vapour from aerial organs of living plants is known as transpiration, whereas, the loss of water from aerial organs of living plants in liquid form is known as guttation. Transpiration helps in:

(i) Cooling of plant

(ii) Upward conduction of water

(iii) Absorption and transport of minerals. ALthough transpiration may indirectly help in both absorption and transport of minerals it is not necessary for either absorption or transport of minerals.

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