Plant Growth Regulators
Plant Growth Regulators: Overview
The topic discusses the plant growth regulators as the small, simple molecules of diverse chemical composition. It also describes the physiological effects of plant growth regulators.
Important Questions on Plant Growth Regulators
How many of the following are phytohormones?

The appearance and fall of fruits occur due to

Which of the following phytohormone helps in fruit ripening

Which plant hormone causes apical dominance?

Which of the following plant hormones causes wilting of leaves?

Which plant hormone causes bending of shoot towards light?

Which of the following is a plant hormone?

Cell division in plants is promoted by:

A plant hormone which inhibits plant growth is -

Which of the following plant hormone inhibits plant growth-

Which of the following is a plant hormone?

Which hormone is liberated by nodule forming bacteria?



Which of the following hormones can replace vernalization?

Match the following
List I | List II | ||
A. | Auxin | i. | Herring sperm DNA |
B. | Cytokinin | ii. | Inhibitor of growth |
C. | Gibberellin | iii. | Apical dominance |
D. | Ethylene | iv. | Epinasty |
E. | Abscisic acid | v. | Induces amylase synthesis |

Storage sprouting of potato can be prevented by

Which of the following enhances or induces fusion of protoplasts


One hormone helps in ripening of fruits while the other stimulates closure of stomata. These are respectively
