Which of the following statements about plant hormones is false?

1. The growth of plants in nature is probably regulated by a combination of growth-stimulating and growth-inhibiting hormones.

2. Abscisic acid generally promotes growth.

3. Gibberellins stimulate cell enlargement.

4. Cytokinins promote cell division.

Subtopic:  Gibberellin |
 84%
From NCERT
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At the root apex the cells of the meristematic region are not characterized by:-

1. Being rich in protoplasm
2. Abundant plasmodesmatal connections
3. A cell wall that is primary in nature
4. Having small inconspicuous nuclei

Subtopic:  Growth |
 75%
From NCERT
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All the following plants are biennials except:-
1. Sugarbeet
2. Cabbages
3. Carrots
4. Wheat

Subtopic:  Vernalization (OLD NCERT) |
 82%
From NCERT
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The growth of a root elongating at a constant rate will be represented by:

1. A only

2. B only

3. Both A and B

4. Neither A nor B

Subtopic:  Growth |
 76%
From NCERT
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Fruit and leaf drop at early stages can be prevented by the application of 
1. Cytokinins
2. ethylene
3. auxins
4. gibberellic acid 

Subtopic:  Growth Hormones & Auxin |
 71%
From NCERT
NEET - 2017
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One of the synthetic auxin is 

1. NAA

2. IAA

3. GA

4. IBA

Subtopic:  Growth Hormones & Auxin |
 83%
From NCERT
NEET - 2009
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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 |
 78%
From NCERT
NEET - 2009
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Which of the following is the site for perception of light/dark in plants?
1. Root apex
2. Shoot apex
3. Leaves
4. Flower

Subtopic:  Photoperiodism (OLD NCERT) |
 79%
From NCERT
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In most situations, which of the following acts as an antagonist to GAs?
1. ABA
2. IAA
3. Kinetin
4. Ethylene

Subtopic:  Abscisic Acid |
 81%
From NCERT
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Cytokinin does not help in:

1. Lateral shoot growth
2. Overcoming apical dominance
3. Adventitious shoot formation
4. Promoting leaf senescence

Subtopic:  Cytokinin |
 71%
From NCERT
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