Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Which of the following is true regarding guttarion? (1) Occurs through stomata (2) Occurs through hydathodes (3) Loss of pure water (4) Occurs mostly during night and early morningA) 1,2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: C
Solution :
Some small sized plants (eg. Primula, Colocasia, Tropeolum and Tomato etc.) secrete water drops from margins of their leaves. This loss of water in liquid form is called guttation. It takes place through special pores present at the tips of veins. These pores are called hydathodes which are always open. Root pressure is the main cause of guttation. The water lost in guttation is not pure water but is a solution of minerals.
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