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Question

Water drops present on leaf margins of Tropaeolum, balsam and grasses in early morning are due to

A
Guttation
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B
Dew
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C
Osmosis
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D
Transpiration
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Solution

The correct option is D Guttation
Guttation is the loss of water in liquid form through hydathodes. Guttation is usually seen under environmental conditions when transpiration is low and soil is well watered. It occurs under the influence of positive root pressure. Water droplets present on leaf margins of some plants in the early morning is not due drops but the water that has oozed out from xylem tracheids.

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