Question
Biology Question on Plant Growth Regulators
Root germination is inhibited by:
A
abscissic add
B
ethylene
C
auxin
D
gibberellin
Answer
abscissic add
Explanation
Solution
Abscissic Acid (ABA) is a major inhibitor of growth in plants and is antagonistic to all the tree growth promoters. (a) It induce dormancy in seed (inhibit seed germination) (b) It inhibit mitosis in vascular combium It induces axillary buds to become dormant