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Q. No.In a dorsiventral [dicot] leaf, the vascular bindles present in the midrib are:
1. smallest in size
2. largest in size
3. equal in size to others
4. radial
Subtopic: Dicot Leaf |
74%
From NCERT
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The transverse section of a dicot root is unlikely to show the presence of a conspicuous:
1. cortex
2. pericycle
3. pith
4. endodermis
1. cortex
2. pericycle
3. pith
4. endodermis
Subtopic: Dicot Leaf |
82%
From NCERT
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In a dicot stem, the term ‘starch sheath’ is often used to indicate:
1. The hypodermis
2. The endodermis
3. The pericycle
4. The medullary rays
1. The hypodermis
2. The endodermis
3. The pericycle
4. The medullary rays
Subtopic: Dicot Stem |
79%
From NCERT
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Identify the correct statements:
I: Guard cells are dumbbell shaped in dicots
II: Initiation of lateral roots and vascular cambium during the secondary growth takes place in pericycle cells in dicot roots.
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
I: Guard cells are dumbbell shaped in dicots
II: Initiation of lateral roots and vascular cambium during the secondary growth takes place in pericycle cells in dicot roots.
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Anatomy of Root |
78%
From NCERT
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The type of vascular bundle shown in the given figure is seen in:
1. Only I
2. Only II and III
3. Only I and II
4. Only II
| I: | Roots |
| II: | Monocot stems |
| III: | Dicot stems |
1. Only I
2. Only II and III
3. Only I and II
4. Only II
Subtopic: Vascular Tissue System |
85%
From NCERT
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Consider the two statements:
| Assertion (A): | Secondary growth takes place in dicot stems but not in monocot stems. |
| Reason (R): | Hypodermis is collenchymatous in dicot stems while it is sclerenchymatous in monocot stems. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True but (R) does not explain (A) |
| 3. | (A) is False but (R) is True |
| 4. | Both (A) and (R) are True and (R) correctly explains (A) |
Subtopic: Dicot Stem | Activity of Vascular Cambium (OLD NCERT) |
85%
From NCERT
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Water containing cavities within the vascular bundles is a feature of the anatomy of a:
1. Monocot stem
2. Dicot stem
3. Monocot root
4. Dicot root
1. Monocot stem
2. Dicot stem
3. Monocot root
4. Dicot root
Subtopic: Monocot Stem |
84%
From NCERT
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What will be true for the figure showing the transverse section of an angiosperm root?
I: It is a section of a dicot root.
II: Secondary growth will be well marked later in this root.
III: The vascular bundles shown are radial and polyarch.
I: It is a section of a dicot root.
II: Secondary growth will be well marked later in this root.
III: The vascular bundles shown are radial and polyarch.
| I | II | III | |
| 1. | T | T | T |
| 2. | F | F | F |
| 3. | F | F | T |
| 4. | T | T | F |
Subtopic: Anatomy of Root |
71%
From NCERT
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Which layer is most likely to have passage cells?
| 1. | Pericycle | 2. | Epidermis |
| 3. | Endodermis | 4. | Cortex |
Subtopic: Ground Tissue System |
58%
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In isobilateral (monocotyledonous) leaf:
1. Only I and II are correct
2. Only II and III are correct
3. I, II and III are correct
4. Only III is correct
| I: | The stomata are present on both the surfaces of the epidermis. |
| II: | The mesophyll is not differentiated into palisade and spongy parenchyma. |
| III: | The parallel venation in monocot leaves is reflected in the near similar sizes of vascular bundles (except in main veins) as seen in vertical sections of the leaves. |
2. Only II and III are correct
3. I, II and III are correct
4. Only III is correct
Subtopic: Monocot Leaf |
83%
From NCERT
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