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Q. No.Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin
1. promotes abscission of mature leaves only.
2. does not affect mature monocotyledonous plants.
3. can help in cell division in grasses, to produce growth.
4. promotes apical dominance
1. promotes abscission of mature leaves only.
2. does not affect mature monocotyledonous plants.
3. can help in cell division in grasses, to produce growth.
4. promotes apical dominance
Subtopic: Growth Hormones & Auxin | Auxin Function |
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NEET - 2024
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Formation of interfascicular cambium from fully developed parenchyma cells is an example of
1. Redifferentiation
2. Dedifferentiation
3. Maturation
4. Differentiation
1. Redifferentiation
2. Dedifferentiation
3. Maturation
4. Differentiation
Subtopic: Differentiation, Dedifferentiation and Redifferentiation |
71%
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NEET - 2024
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Spraying sugarcane crop with which of the following plant growth regulators, increases the length of the stem, thus, increasing the yield?
| 1. | Gibberellin | 2. | Cytokinin |
| 3. | Abscisic acid | 4. | Auxin |
Subtopic: Gibberellin |
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NEET - 2024
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Match List-I with List-II
Choose the correct answer from the options given below:
1. A-III, B-I, C-IV, D-II
2. A-II, B-III, C-IV, D-I
3. A-IV, B-II, C-I, D-III
4. A-III, B-IV, C-I, D-II
| List-I | List-II | ||
| A. | Ethylene | I. | Increase length of stem |
| B. | Cytokinins | II. | Promotion of senescence and abscission |
| C. | ABA | III. | Delaying leaf senescence |
| D. | Gibberellins | IV. | Inhibition of seed germination |
1. A-III, B-I, C-IV, D-II
2. A-II, B-III, C-IV, D-I
3. A-IV, B-II, C-I, D-III
4. A-III, B-IV, C-I, D-II
Subtopic: Gibberellin | Cytokinin | Ethylene | Abscisic Acid |
84%
From NCERT
NEET - 2024
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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 |
68%
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 |
57%
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 |
Subtopic: Gibberellin |
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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
1. Phototropism
2. Root initiation
3. Gravitropism
4. Apical Dominance
Subtopic: Growth Hormones & Auxin | Photoperiodism (OLD NCERT) |
61%
From NCERT
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 |
84%
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 |
78%
From NCERT
NEET - 2023
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