“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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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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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh

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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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NEET 2021 - Achiever Batch - Aryan Raj Singh

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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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NEET 2021 - Achiever Batch - Aryan Raj Singh

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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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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh

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Vernalization is the process of

1. flower induction by high temperature treatment

2. inhabitation of flowering by low temperature treatment

3. flower induction by light treatment

4. acceleration of the ability of a plant to produce flowers by chilling treatment

Subtopic:  Vernalization |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh

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Parthenocarpy in grapes is induced by:-

1. cytokinins

2. gibberellins

3. topoisomerases

4. primase

Subtopic:  Growth Hormones & Auxin |
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NEET 2021 - Achiever Batch - Aryan Raj Singh

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Phytochromes play a role in 

(1) seed germination

(2) flowering 

(3) photomorphogenesis

(4) photosynthesis.

Subtopic:  Photoperiodism |
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Induction of flowering by low temperature in plants is 

1. cryobiology

2. vernalization 

3. phototropism

4. pruning.

Subtopic:  Vernalization |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh

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