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Q. No.Induction of flowering by low temperature treatment is?
1. vernalization
2. cryobiology
3. photoperiodism
4. pruning
Subtopic: Vernalization (OLD NCERT) |
92%
From NCERT
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The bioassay of auxin is?
1. Avena curvature
2. callus formation
3. culture of fungus
4. seed dormancy
1. Avena curvature
2. callus formation
3. culture of fungus
4. seed dormancy
Subtopic: Growth Hormones & Auxin |
85%
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The bioassay of auxin is?
1. avena curvature test
2. callus formation
3. culture of fungus
4. seed dormancy
1. avena curvature test
2. callus formation
3. culture of fungus
4. seed dormancy
Subtopic: Growth Hormones & Auxin |
95%
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Subtopic: Abscisic Acid |
77%
From NCERT
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Subtopic: Growth Hormones & Auxin |
91%
From NCERT
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Consider the given two statements:
Statement I: Development in plants is the sum of two processes: growth and differentiation.
Statement II: The development of a mature plant from a zygote (fertilised egg) follows a precise and highly ordered succession of events.
1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct
Statement I: Development in plants is the sum of two processes: growth and differentiation.
Statement II: The development of a mature plant from a zygote (fertilised egg) follows a precise and highly ordered succession of events.
1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct
Subtopic: Growth |
90%
From NCERT
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The form of growth wherein new cells are always being added to the plant body by the activity
of the meristem is called the:
1. closed form of growth.
2. open form of growth.
3. determinate form of growth
4. positive form of growth.
of the meristem is called the:
1. closed form of growth.
2. open form of growth.
3. determinate form of growth
4. positive form of growth.
Subtopic: Growth |
94%
From NCERT
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Which of the following, principally, contribute to the elongation of the plants along their axis?
1. Only I and II
2. Only III and IV
3. Only I and III
4. Only II and IV
| I: | Root apical meristem |
| II: | Shoot apical meristem |
| III: | Vascular cambium |
| IV: | Cork-cambium |
1. Only I and II
2. Only III and IV
3. Only I and III
4. Only II and IV
Subtopic: Growth |
88%
From NCERT
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Consider the given two statements:
| Assertion (A): | Growth, at the cellular level, is measured by a variety of parameters, some of which are: increase in fresh weight, dry weight, length, area, volume and cell number. |
| Reason (R): | Growth, at a cellular level, is principally a consequence of an increase in the amount of protoplasm, and increase in protoplasm is difficult to measure directly. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False. |
| 4. | (A) is False; (R) is True. |
Subtopic: Growth |
74%
From NCERT
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The cells in the region of elongation at the root apex are not characterised by:
| 1. | Increased vacuolation | 2. | Cell enlargement |
| 3. | Constant division | 4. | New cell wall deposition |
Subtopic: Growth |
72%
From NCERT
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