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BIOLOGY CH19 Plant Physiology — Science STD 9 — Question

Tamilnadu BoardEnglish MediumSTD 9ScienceBIOLOGY CH19 Plant Physiology2 Marks
Question
Why is transpiration called as necessary evil?
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Answer

Water is lost by transpiration but still it is a necessary process since it gives the following advantages to the plant.Creates an absorption force in roots to suck more water form the soil.Regulates the temperature of the plant. Hence transpiration is said to be a necessary evil.

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