NEET 2011 Biology question

Biology Transport in Plants NEET 2011

Not in NEET syllabus

Guttation is the result of :

(1)Diffusion
(2)Transpiration
(3)Osmosis
(4)Root pressureCorrect

Answer: (4)

Solution

Guttation is the loss of water in liquid form from hydathodes at leaf margins (tips of veins), seen at night or early morning when transpiration is low and soil water is plentiful. It is caused by the positive hydrostatic pressure developed in

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Question ID VK-090738