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Q. No.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%
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What would not be true for the cells in the meristematic region at the root apex?
| 1. | They are constantly dividing cells. |
| 2. | They are rich in protoplasm, possess large conspicuous nuclei. |
| 3. | Their cell walls are primary in nature. |
| 4. | Plasmodesmatal connections between the cells are absent. |
Subtopic: Growth | Growth Model | Development |
88%
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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 |
73%
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The cells of which zone at the root apex attain their maximal size in terms of wall thickening and protoplasmic modifications?
1. Root cap
2. Meristematic zone
3. Elongation zone
4. Maturation zone
1. Root cap
2. Meristematic zone
3. Elongation zone
4. Maturation zone
Subtopic: Growth | Growth Terminology | Development | Differentiation, Dedifferentiation and Redifferentiation |
76%
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Consider the given two statements:
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: | In geometric growth, following mitotic cell division, only one daughter cell continues to divide while the other differentiates and matures. |
| Statement II: | In arithmetic growth, both the progeny cells following mitotic cell division retain the ability to divide and continue to do so. |
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 | Growth Model |
81%
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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%
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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%
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Quantitative comparisons between the growth of living system can be made in two ways where:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | measurement and the comparison of total growth per unit time is called the absolute growth rate. |
| II: | the growth of the given system per unit time expressed on a common basis, e.g., per unit initial parameter is called the relative growth rate. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Growth | Growth Model | Growth Terminology | Development |
91%
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In plants, during growth and development:
1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
| I: | Turgidity of cells helps in extension growth. |
| II: | Water provides the medium for enzymatic activities needed for growth. |
| III: | Oxygen helps in releasing metabolic energy essential for growth activities. |
| IV: | Nutrients (macro and micro essential elements) are required for the synthesis of protoplasm and act as source of energy. |
1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
Subtopic: Growth | Growth Terminology | Differentiation, Dedifferentiation and Redifferentiation |
90%
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