Phototropic curvature is the result of uneven distribution of.

1. gibberellin

2. phytochrome

3. cytokinins

4. auxin

Subtopic:  Growth Hormones & Auxin |
 79%
NEET - 2010
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Photoperiodism was first characterised in :-

1. tobacco

2. potato

3. tomato 

4. cotton

Subtopic:  Photoperiodism (OLD NCERT) |
 74%
NEET - 2010
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Coiling of garden pea tendrils around any support is an example of 
1. thigmotaxis
2. thigmonasty 
3. thigmotropism
4. thermotaxis

Subtopic:  Growth Terminology |
 66%
NEET - 2010
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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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NEET 2023 - Target Batch - Aryan Raj Singh

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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Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in

1. vessels and tracheid differentiation

2. leaf abscission

3. annual plants

4. floral parts
 

Subtopic:  Ethylene | Abscisic Acid |
 69%
NEET - 2008
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Importance of day length in flowering of plants was first shown in 

1. Lemna

2. tobacco

3. cotton

4. Petunia

Subtopic:  Photoperiodism (OLD NCERT) |
 85%
NEET - 2008
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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 | Growth Terminology |
 71%
NEET - 2007
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“Foolish seedling" disease of rice led to the discovery of:-

1. GA

2. ABA

3. 2,4-D

4. IAA

Subtopic:  Gibberellin |
 90%
From NCERT
NEET - 2007
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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 |
 74%
From NCERT
NEET - 2007
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NEET 2023 - Target Batch - Aryan Raj Singh