Which of the following PGR is correctly matched with its physiological function?
Important Questions on Plant Growth and Mineral Nutrition
Match the following concerning the activity/function and the phytohormone involved:-
| (a) | Fruit ripener | (i) | Abscisic acid |
| (b) | Herbicide | (ii) | |
| (c) | Bolting agent | (iii) | |
| (d) | Stress hormone | (iv) | Ethephon |
Select the correct option from following:-
Observe the given set of physiological activities regulated by different plant growth regulators and list out the number of activities promoted by auxins, cytokinin, gibberellin and ethylene, respectively.
a) Xylem differentiation
b) Improvement of the shape of an apple
c) Hastening the apple ripening
d) Delay of senescence
e) Promote nutrient mobilization
f) Lateral and adventitious shoot growth
g) Root growth and root hair formation
h) Increase of root absorption surface
It takes a very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?
Withstand desiccation and other factors unfavourable for growth
Promotes female flowers in cucumber
Increase absorption surface
Rapid elongation in internodes
Match the plant hormones in Column I with their primary function in Column II.
| Column I | Column II |
| P. Abscisic acid | i. Promotes disease resistance |
| Q. Ethylene | ii. Maintains seed dormancy |
| R. Cytokinin | iii. Promotes seed germination |
| S. Gibberellins | iv. Promotes fruit ripening |
| v. Inhibits leaf senescence |
Choose the correct combination:
Kinetin is a derivative of adenine which is a pyrimidine.
The technique of decapitation is widely used in tea plantations.
Ethylene is gaseous plant hormone.
Use of hastens the malting process in brewing industry.
ABA is a growth promoter.
