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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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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Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.

1. Gibberellin

2. Ethylene

3. Abscisic acid

4. Cytokinin

Subtopic:  Gibberellin |
 87%
From NCERT
NEET - 2020
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Match the following concerning the activity/function and the phytohormone involved:

Column I Column II
(a) Fruit ripener      (i) Abscisic acid
(b) Herbicide (ii) GA 3
(c) Bolting agent    (iii) 2, 4-D
(d) Stress hormone (iv) Ethephon


Select the correct option from following:

Options: (a) (b) (c) (d)
1. (ii) (iii) (iv) (i)
2. (iii) (iv) (ii) (i)
3. (iv) (iii) (ii) (i)
4. (iv) (ii) (i) (iii)

Subtopic:  Growth Hormones & Auxin | Gibberellin | Ethylene | Abscisic Acid |
 85%
From NCERT
NEET - 2020
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NEET 2023 - Target Batch - Aryan Raj Singh
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In order to increase the yield of sugarcane crops, which of the following plant growth regulators should be sprayed?

1. Ethylene 2. Auxins
3. Gibberellins 4. Cytokinins
Subtopic:  Gibberellin |
 87%
From NCERT
NEET - 2019
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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 |
 89%
From NCERT
AIPMT - 2007
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NEET 2023 - Target 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 - Leaves fall
3. Cytokinin - Cell division
4. IAA - Cell wall elongation
Subtopic:  Gibberellin |
 73%
From NCERT
AIPMT - 2007
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NEET 2023 - Target Batch - Aryan Raj Singh
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Cell elongation in internodal regions of the green plants takes place due to:

 
1. Cytokinins 2. Gibberellins
3. Ethylene 4. Indole acetic acid 
Subtopic:  Gibberellin |
 71%
From NCERT
AIPMT - 2004
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NEET 2023 - Target Batch - Aryan Raj Singh
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