27. Which is not involved in entry of water through suberized roots

(a)  Lenticels, wounds and breaks around branch roots

(b)  Roots and root hairs

(c)   Root cap

(d)  (a) and (c) both

Ans.  (b)      Because the concentration of cytoplasm of pollen grains is high in comparison to dilute sugar solution or water.

(19)