Question

In the leaves of strawberry, water appears to be exuded through leaf margins. This is due to the combination of:
i. Adhesion
ii. Root pressure
iii. Transpiration
iv. Guttation.

• A. i, ii and iii
• B. ii, iii and iv
• C. i, ii and iv
• D. Only i, & iv

Answer 1

Answer: (C)

i, ii and iv

• Guttation is the process of loss of water from the surface of leaves in the form of liquid drops. Hydathodes are the openings through which guttation takes place that are present on the margins of leaves.
  
• Guttation occurs when root pressure is high and transpiration is low. Guttation is frequently seen occurring at night in herbaceous plants growing under conditions of high soil moisture and high atmospheric humidity.
  
• Water rises up in the process due to the property of Adhesion.

So, the correct option is 'i, ii and iv'.