Biology
A certain process called "Guttation' occurs from the leaves of herbaceous plants.
(i) The exudate released during the process is water without mineral salts.
(ii) Guttation occurs when the 'rate of absorption' exceeds the 'rate of transpiration'.
(iii) It happens through the hydathodes of the leaves plants growing in warm humid conditions only.
(iv) Guttation is a kind of exudation which usually occurs during summer afternoons.
Which of the above statements with respect to this process are correct ?
- (i) and (ii)
- (ii) and (iii)
- (iii) and (iv)
- (iv) and (i)
Transpiration
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Answer
(ii) and (iii)
Reason — Guttation occurs through the hydathodes of leaves when water absorption by the roots is high and transpiration is low. The liquid released is not pure water; it contains dissolved mineral salts.
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