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Q.

The process by which plants lose water by evaporation is called


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a

Respiration

b

Photosynthesis

c

Transpiration

d

Absorption

answer is C.

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Detailed Solution

Concept: Water vapour is lost via the process of transpiration through a plant's stomata. When it's really hot outside, the plant loses water vapour to cool down, and water from the stem and roots flows up or is "drawn" into the leaves.
Transpirational pull depends on the following factors of water .
Via the act of transpiration, plants take in water through their roots and release it as water vapour through pores in their leaves. When a plant takes up water in its roots, that is an example of transpiration.
Cohesion: Mutual attraction between water molecules.
Adhesion: Attraction of water molecules to polar surfaces.
Surface tension: Water molecules are more attracted to each other in the liquid phase than in the gaseous phase. So, the answer is Transpiration'
Hence, the correct answer option (3) .
 
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