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Q. No.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 |
83%
Level 1: 80%+
NEET - 2024
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NEET 2026 - Target Batch - Vital
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Match List-I with List-II
Choose the correct answer from the options given below:
| 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 |
88%
Level 1: 80%+
NEET - 2024
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NEET 2026 - Target Batch - Vital
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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 |
Subtopic: Differentiation, Dedifferentiation and Redifferentiation |
74%
Level 2: 60%+
NEET - 2024
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NEET 2026 - Target Batch - Vital
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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 |
Subtopic: Growth Hormones & Auxin | Auxin Function |
71%
Level 2: 60%+
NEET - 2024
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NEET 2026 - Target Batch - Vital
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Find odd one w.r.t. differentiation
1. Loss of nucleus in sieve
2. Death of protoplasm in tracheary elements
3. Callus formation
4, Lignification in vessels
1. Loss of nucleus in sieve
2. Death of protoplasm in tracheary elements
3. Callus formation
4, Lignification in vessels
Subtopic: Growth | Growth Hormones & Auxin |
62%
Level 2: 60%+
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Match the following (Column I with Column II)
| Column I | Column II | ||
| a | Weedicide | (i) | GA3 |
| b | Bolting | (ii) | Cytokinin |
| c | Thinning of cotton | (iii) | Ethylene |
| d | Lateral shoot growth | (iv) | 2,4-D |
| 1. | a(iii), b(ii), c(iv), d(i) |
| 2. | a(iv), b(i), c(iii), d(ii) |
| 3. | a(iv), b(i), c(ii), d(iii) |
| 4. | a(iv), b(ii), c(iii), d(i) |
Subtopic: Growth Hormones & Auxin | Gibberellin | Cytokinin | Ethylene |
80%
Level 1: 80%+
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Match the following (Column I with Column II)
| Column I | Column II | ||
| a | Ethephon | (i) | GA |
| b | Terpene | (ii) | Ethylene |
| c | Zeath | (iii) | Natural auxin |
| d | IAA | (iv) | Cytokinin |
| 1. | a(ii), b(i), c(iii), d(iv) |
| 2. | a(ii), b(i), c(iv), d(iii) |
| 3. | a(iv), b(ii), c(iii), d(iv) |
| 4. | a(i), b(ii), c(iii), d(iv) |
Subtopic: Growth Hormones & Auxin | Gibberellin | Cytokinin |
87%
Level 1: 80%+
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Which abiotic factor is not essential for early growth of the plant but growth is sustained only in its presence?
1. Water
2. Oxygen
1. Water
2. Oxygen
3. Nutrients
4. Light
4. Light
Subtopic: Growth |
57%
Level 3: 35%-60%
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Which of the following is not a function of water in plants?
1. It is responsible for cell elongation
2. It maintains the turgidity of cells
3. It acts as a source of energy
4. It provides medium for enzymatic activities
1. It is responsible for cell elongation
2. It maintains the turgidity of cells
3. It acts as a source of energy
4. It provides medium for enzymatic activities
Subtopic: Growth |
72%
Level 2: 60%+
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What happens to the growth of roots during water logging conditions?
1. Growth is accelerated
2. Growth is inhibited
3. Growth remains constant
4. First growth is accelerated and then stops
1. Growth is accelerated
2. Growth is inhibited
3. Growth remains constant
4. First growth is accelerated and then stops
Subtopic: Growth |
Level 3: 35%-60%
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