The main function of abscisic acid in plants is to
(a) increase the length of cells
(b) promote cell division
(c) inhibit growth
(d) promote growth of stem
Answer: C
Solution: Abscisic acid is the plant hormone. It is also called as stress hormone because it shows different responses in the stress conditions. It leads to the seed dormancy and ensures seed germination only when favourable conditions return. It also causes the closing of stomata when plant doesn’t get enough water.