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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NEET 2023 - Target Batch - Aryan Raj Singh
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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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NEET 2023 - Target Batch - Aryan Raj Singh

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

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 |
 74%
NEET - 2006
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NEET 2023 - Target 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 (OLD NCERT) |
 75%
NEET - 2006
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NEET 2023 - Target 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 (OLD NCERT) |
 55%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

Parthenocarpy in grapes is induced by:-

1. cytokinins

2. gibberellins

3. topoisomerases

4. primase

Subtopic:  Growth Hormones & Auxin |
 74%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Phytochromes play a role in 

(1) seed germination

(2) flowering 

(3) photomorphogenesis

(4) photosynthesis.

Subtopic:  Photoperiodism (OLD NCERT) |
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NEET 2023 - Target Batch - Aryan Raj Singh
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Induction of flowering by low temperature in plants is 

1. cryobiology

2. vernalization 

3. phototropism

4. pruning.

Subtopic:  Vernalization (OLD NCERT) |
 94%
From NCERT
AIIMS - 2001
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following statements is correct regarding short day plants (SDPs)?

1. They can flower in complete darkness if supplied with exogenous nutrients.

2. They are the same as long day plants.

3. They do not have a critical photoperiod.

4. All of these.

Subtopic:  Photoperiodism (OLD NCERT) |
 66%
AIIMS - 2001
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NEET 2023 - Target Batch - Aryan Raj Singh
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