Phototropic curvature is the result of uneven distribution of.
1. gibberellin
2. phytochrome
3. cytokinins
4. auxin

Subtopic:  Growth Hormones & Auxin |
 80%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Coiling of garden pea tendrils around any support is an example of
1. thigmotaxis
2. thigmonasty
3. thigmotropism
4. thermotaxis

Subtopic:  Growth |
 67%

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

One of the synthetic auxin is

1. NAA 2. IAA
3. GA 4. IBA
Subtopic:  Auxin Function |
 81%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

Which one of the following acids is a derivative of carotenoids?

 
1. Indole-butyric acid 2. Indole-3-acetic acid
3. Gibberellic acid 4. Abscisic acid
Subtopic:  Abscisic Acid |
 68%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Importance of day length in flowering of plants was first shown in
1. Lemna
2. tobacco
3. cotton
4. Petunia

Subtopic:  Photoperiodism (OLD NCERT) |
 79%

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

Opening of floral buds into flowers, is a type of:-
1. autonomic movement of locomotion
2. autonomic movement of variation
3. paratonic movement of growth
4. autonomic movement of growth

Subtopic:  Growth |
 70%

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

advertisementadvertisement

“Foolish seedling" disease of rice led to the discovery of:

 
1. GA 2. ABA
3. 2,4-D 4. IAA

Subtopic:  Gibberellin |
 88%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Which one of the following pairs, is not correctly matched?
1. Abscisic acid - Stomatal closure
2. Gibberellic acid - Leaf fall
3. Cytokinin - Cell division
4. IAA - Cell wall elongation

Subtopic:  Gibberellin |
 83%

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

How does pruning help in making the hedge dense?

1. It induces the differentiation of new shoots from the rootstock
2. It frees axillary buds from apical dominance
3. The apical shoots grow faster after pruning
4. It releases wound hormones
Subtopic:  Auxin Function |
 78%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

Treatment of seed at low temperature under moist conditions to break its dormancy is called 
1. scarification
2. vernalization
3. chelation
4. stratification

Subtopic:  Seed Dormancy (OLD NCERT) |

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints