Coconut milk factor is:
1. An auxin
2. A gibberellin
3. Abscisic acid
4. Cytokinin
Seed dormancy is due to:
1. Ethylene
2. Abscisic acid
3. IAA
4. Starch
Which of the following PGR is present in coconut milk which is used in tissue culture?
1. Cytokinin
2. Auxin
3. Gibberellin
4. Ethylene
Which hormone is responsible for fruit ripening:
1. Ethylene
2. Auxin
3. Ethyl chloride
4. Cytokinin
If the apical bud has been removed then we observe:
1. More lateral branches
2. More axillary buds
3. Plant growth stops
4. Flowering stops
The plant hormone used to destroy weeds in a field is:
1. 2, 4-D
2. IBA
3. IAA
4. NAA
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called:
1. | Plasticity | 2. | Maturity |
3. | Elasticity | 4. | Flexibility |
The site of perception of light in plants during photoperiodism is:
1. Axillary bud
2. Leaf
3. Shoot apex
4. Stem
Cell elongation in internodal regions of the green plants takes place due to:
1. | Cytokinins | 2. | Gibberellins |
3. | Ethylene | 4. | Indole acetic acid |
The maximum growth rate occurs in:
1. Senescent phase
2. Lag phase
3. Exponential phase
4. Stationary phase