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Q. No.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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Mathematically, arithmetic growth in plants is expressed as:
| 1. | Lt = L0 + rt | 2. | Lt = L0 X rt |
| 3. | Lt = L0 / rt | 4. | Lt = L0 - rt |
Subtopic: Growth Model |
95%
From NCERT
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Consider the given two statements:
| Assertion (A): | A sigmoid curve is a characteristic of living organism growing in a natural environment. |
| Reason (R): | It is typical for all cells, tissues and organs of a plant. |
| 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 |
From NCERT
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The efficiency index in the geometric growth equation W1 = W0 ert is denoted by:
1. W0
2.W1
3. r
4. e
1. W0
2.W1
3. r
4. e
Subtopic: Growth Model |
83%
From NCERT
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Consider the given two statements:
Assertion: Plant growth is intimately linked to the water status of the plant while development is not.
Reason: The plant cells grow in size by cell enlargement which in turn requires water.
1. Both Assertion and Reason are true and Reason correctly explains the Assertion.
2 Both Assertion and Reason are true but Reason does not correctly explain the Assertion.
3. Assertion is true; Reason is false.
4. Assertion is false; Reason is true.
Assertion: Plant growth is intimately linked to the water status of the plant while development is not.
Reason: The plant cells grow in size by cell enlargement which in turn requires water.
1. Both Assertion and Reason are true and Reason correctly explains the Assertion.
2 Both Assertion and Reason are true but Reason does not correctly explain the Assertion.
3. Assertion is true; Reason is false.
4. Assertion is false; Reason is true.
Subtopic: Growth |
50%
From NCERT
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