Question

Which is not a advantage of transpiration in plants?

Answer 1

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Answer 2

Disadvantages of transpiration

(a) Wilting: Wilting or loss of turgidity is quite common during noon due to transpiration being higher than the rate of water absorption. Wilting reduces photosynthesis and other metabolic activities.

(b) Reduced Growth : Transpiration reduces

availability of water inside the plant. Water deficit decrease the growth and hence the plant gives a stunted appearance

© Reduced Yield : As reported by Tumarov (1925), a single wilting reduces by 50%. It is because decreased availability of water inside the plant checks meristematic activity and hence the formation of flowers, fruits and seeds.

(d) Abscissic Acid : Water stress produces abscissic acid. Abscissic acid prevents several plant processes and promotes abscission of leaves, flowers and fruits.

(e) Wastage of Energy : Since 98-99% of absorbed water is lost through transpiration, the energy used in absorption and conduction of water goes waste.

(f) Modification : In order to reduce transpiration :

during critical periods, the plants produce several types of modification like thick cuticle, hair, prickles, spines, thorns, sunken stomata, phylloclades, cladodes, etc.