A) It occurs through specialized pores called hydathodes
B) It occurs in herbaceous plants when root pressure is low and transpiration is high
C) It only occur during the day time
D) It occurs in plants growing under conditions of low soil moisture and high humidity
Correct Answer: A
Solution :
Guttation refers to the exudation of water droplets (in the form of salt solution) from the margins and tips of leaves. Guttation water is exuded from the group of leaf cells through specialized openings or pores called hydathodes. It occurs in some angiosperms like garden nastertium (Tropaeolum), Colocasia, tomato, etc and is most noticeable when transpiration is suppressed and relative humidity is high such as during the night. It also takes place early in the morning, when soil moisture, root pressure and rate of water absorption are higher.
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