(a)What is guttation? What is the cause of guttation?
(b) What are hydathodes?

Explanation

(a) The process of exudation of liqueid droplets form the edges fo leaves is called guttation when root pressure increases water is forced out in to intercellular spaces and flows out of the hydathodes
(b)These are stomata like pores generally present at the tips or margins of leaves of leaves of those plants which grow in moist and shady places