Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed production?
1.Abscisic Acid2.Indole-3-butyric Acid
3.Gibberellic Acid4.Zeatin

Subtopic:  Gibberellin |
 78%
From NCERT
NEET - 2023
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The phenomenon which is influenced by auxin and also played a major role in its discovery is:
1. Phototropism
2. Root initiation
3. Gravitropism
4. Apical Dominance
Subtopic:  Growth Hormones & Auxin | Photoperiodism (OLD NCERT) |
 63%
From NCERT
NEET - 2023
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Match List - I with List - II
List - I List - II
(A) Auxin (I) Promotes female flower formation in cucumber
(B) Gibberellin (II) Overcoming apical dominance
(C) Cytokinin (III) Increase in the length of grape stalks
(D) Ethylene (IV) Promotes flowering in pineapple

Choose the correct answer from the options given below:
Options: (A) (B) (C) (D)
1. II I IV III
2. IV III II I
3. I III IV II
4. III II I IV
Subtopic:  Auxin Function | Gibberellin | Cytokinin | Ethylene |
 85%
From NCERT
NEET - 2023
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Which of the following statements is not correct?
 
1. Phase of cell elongation of plant cells is characterized by increased vacuolation.
2. Cells in the meristematic phase of growth exhibit abundant plasmodesmatal connections
3. Plant growth is generally determinate
4. Plant growth is measurable
Subtopic:  Growth |
 79%
From NCERT
NEET - 2023
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In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be called as 
1. Senescence  2. Differentiation 
3. Dedifferentiation  4. Development 
Subtopic:  Differentiation, Dedifferentiation and Redifferentiation |
 56%
NEET - 2023
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Which hormone promotes internode/petiole elongation in deep water rice?
1.2, 4-D 2.GA3
3.Kinetin 4.Ethylene 
Subtopic:  Ethylene |
 69%
From NCERT
NEET - 2023
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The ability of plants to follow different pathways in response to environment leading to formation of different kinds of structures are called :
1. Redifferentiation
2. Development
3. Plasticity
4. Differentiation
Subtopic:  Development |
 91%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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The phenomenon by which the undividing parenchyma cells start to divide mitotically during plant tissue culture is called as :
1. Differentiation
2. Dedifferentiation
3. Redifferentiation
4. Secondary growth
Subtopic:  Differentiation, Dedifferentiation and Redifferentiation |
 70%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which of the following growth regulators is an adenine derivative ?
1.Auxin2.Cytokinin
3.Ethylene4.Abscisic acid
Subtopic:  Growth Hormones & Auxin |
 72%
From NCERT
NEET - 2022
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Removal of apical dominance by decapitation is utilised for: 
1. Suppressing the activity of intercalary meristem 
2. Early senescence 
3. Hedge making 
4. Preparing weed-free lawns 

Subtopic:  Growth Hormones & Auxin | Auxin Function |
 79%
From NCERT
NEET - 2022
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