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 |
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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 |
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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 |
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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 |
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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 |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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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 |
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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 Shoot grows faster after pruning

4. It releases wound hormones

Subtopic:  Growth Hormones & Auxin |
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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 |
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An enzyme that can stimulate germination of barley seeds is:-

1. α-amylase   

2. lipase

3. protease     

4. invertase

Subtopic:  Seed Dormancy |
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The aquatic plant Limnophila has leaves of more than one shape. The condition is described as

(1) polyphylly

(2) amphiphyly

(3) heterophylly

(4) biphylly

Subtopic:  Development |
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