- 1(current)
Q. No.Identify the incorrect statement:
| 1. | Growth is primarily expressed as increase in number of cells at the root apical meristem in maize. |
| 2. | Growth is primarily represented as increase in size of cells in watermelons. |
| 3. | Growth of a pollen tube is measured in terms of its girth. |
| 4. | An increase in surface area denotes the growth in a dorsiventral leaf. |
Subtopic: Growth | Growth Terminology |
90%
From NCERT
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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%
From NCERT
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Identify the incorrect statement regarding the arithmetic growth?
| 1. | Following mitosis, both daughter cells continue to divide |
| 2. | Can be exemplified by root elongating at a constant rate |
| 3. | On plotting the length of the organ against time, a linear curve is obtained |
| 4. | Mathematically it is expressed as |
Subtopic: Growth | Growth Terminology |
77%
From NCERT
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The shape of the growth curve characteristic of a living organism growing in natural environment is:
| 1. | Linear | 2. | Sigmoid |
| 3. | Hyperbola | 4. | Bell shaped |
Subtopic: Growth Terminology |
89%
From NCERT
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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%
From NCERT
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Consider the given diagram and select the correct inference:
| 1. | Both leaves have shown different absolute growths |
| 2. | First leaf has exhibited growth but second leaf has not as it is already senescent |
| 3. | The relative growth of first leaf is more than that of the second leaf |
| 4. | Both leaves have exhibited equal relative growths |
Subtopic: Growth | Growth Terminology |
79%
From NCERT
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Plant growth and further development is intimately linked to water status of the plant because:
A. Turgidity of cells helps in extension growth
B. It provides medium for enzymatic activity
1. Both A and B are correct
2. Only A is correct
3. Only B is correct
4. Both A and B are incorrect
Subtopic: Growth | Growth Terminology |
87%
From NCERT
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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%
From NCERT
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The optimum temperature range for proper growth in most plants is:
| 1. | \(0^\circ C - 100^\circ C\) | 2. | \(15^\circ C - 20^\circ C\) |
| 3. | \(28^\circ C - 30^\circ C\) | 4. | Greater than \(45^\circ C\) |
Subtopic: Growth Terminology | Development |
65%
From NCERT
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The examples of de-differentiation in plants include:
| I: | Formation of a tumour. |
| II: | Parenchyma cells made to divide under controlled laboratory conditions during plant tissue culture. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Growth Terminology | Development | Differentiation, Dedifferentiation and Redifferentiation |
64%
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