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Q. No.Consider the given two statements:
Assertion (A):
Plant growth is intimately linked to the water status of the plant.
Reason (R):
The plant cells grow in size by cell enlargement, which in turn requires water.
1.
(A) is True but (R) is False
2.
Both (A) and (R) are True and (R) correctly explains (A)
3.
Both (A) and (R) are True and but (R) does not correctly explain (A)
4.
(A) is False but (R) is True
Subtopic: Growth |
85%
Level 1: 80%+
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All the following plants exhibit difference in shape of leaves in juvenile and in mature phase of their life cycle except:
1. Cotton
2. Coriander
3. Larkspur
4. Buttercup
1. Cotton
2. Coriander
3. Larkspur
4. Buttercup
Subtopic: Development |
77%
Level 2: 60%+
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All the following are known functions of the plant growth regulator auxins except:
| 1. | Promotion of flowering in pineapples |
| 2. | Induction of parthenocarpy in tomatoes |
| 3. | Fruit ripening in tomatoes |
| 4. | Initiation of rooting in stem cuttings |
Subtopic: Growth Hormones & Auxin | Ethylene |
85%
Level 1: 80%+
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Regarding plant growth regulators:
| I: | Auxins are plant growth promoters |
| II: | ABA is a plant growth inhibitor |
| III: | Ethylene is largely an inhibitor of growth activities |
| 1. | Only I and II are correct |
| 2. | Only I and III are correct |
| 3. | Only II and III are correct |
| 4. | I, II and III are correct |
Subtopic: Growth Hormones & Auxin |
85%
Level 1: 80%+
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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 |
71%
Level 2: 60%+
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 |
58%
Level 3: 35%-60%
NEET - 2023
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Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed production?
1. Abscisic Acid
2. Indole-3-butyric Acid
3. Gibberellic Acid
4. Zeatin
1. Abscisic Acid
2. Indole-3-butyric Acid
3. Gibberellic Acid
4. Zeatin
Subtopic: Gibberellin |
80%
Level 1: 80%+
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 |
63%
Level 2: 60%+
NEET - 2023
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Match List-I with List-II
Choose the correct answer from the options given below:
| 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 |
86%
Level 1: 80%+
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%
Level 2: 60%+
NEET - 2023
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