Q. No.Plant Growth Regulators (PGRs) are not
1.
Very less in number in plants
2.
Small and simple molecules
3.
Diverse chemical composition
4.
Plant hormones or phytohormones
N6- furfurylamino purine and kinetin are derivative of …….
| 1. | Indol compounds | 2. | Adenine |
| 3. | carotenoids | 4. | Terpenes |
Abscisic Acid and ABA are derivative of…..
| 1. | Indol compounds | 2. | Adenine |
| 3. | carotenoids | 4. | Terpenes |
In the living plant body, the PGRs can be broadly divided into two groups. This classification is actually based on
| 1. | Function | 2. | Structure |
| 3. | Metabolism | 4. | Kinetin |
Plant growth promotors are not involved in
(1) Cell division, cell enlargement
(2) Pattern formation, seed formation
(3) Dormancy, Abscission
(4) Fruiting and Flowering
The PGRs of the other group which play an important role in plant growth inhibiting activities is not
| 1. | Ethylene | 2. | ABA |
| 3. | GA | 4. | All of these |
Which of the following hormones is common in both the categories of plant promotor and plant inhibitor?
| 1. | GA | 2. | ABA |
| 3. | Auxin | 4. | Ethylene |
Which of the following is wrong?
| 1. | ABA is Growth inhibiting regulator |
| 2. | Ethylene could fit either of the groups, inhibitors and activators. |
| 3. | Auxins, GA and Cytokinins are plant promotors |
| 4. | Ethylene is largely a promotor of growth activities |
The Discovery of PGRs
(1) Four discovery were accidental one was with a planned experiment
(2) Three discovery were accidental Two were with a planned experiment
(3) Two discovery were accidental Three were with a planned experiment
(4) All five we're accidental
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