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Q. No.Derdrochronometer is used to measure/count?
1. Ring in tree for age measurement
2. width of tree
3. length of trees
4. types of wood
81%
Level 1: 80%+
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The given diagrams show stomatal apparatus in dicots and monocots. Which one is the correct option for A, B, and C?
| 1. | A-Epidermal cells; B-Subsidiary cells; C-chloroplast |
| 2. | A-Guard cells; B-Subsidiary cells; C-Stomatal pore |
| 3. | A-Guard cells; B-Epidermal cells; C-Guard cells |
| 4. | A-Epidermal cells; B-Subsidiary cells; C-Guard cells |
Subtopic: Epidermal Tissue System |
81%
Level 1: 80%+
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Isobilateral (Monocotyledonous) leaf:
Choose the correct answer from the options given below:
1. A, B and D only
2. C and D only
3. B and D only
4. A and D only
| A: | exhibits reticulate venation |
| B: | mesophyll is differentiated into palisade and spongy parenchyma |
| C: | mesophyll is not differentiated into palisade and spongy parenchyma |
| D: | In grasses, certain adaxial epidermal cells along the veins modify into bulliform cells |
1. A, B and D only
2. C and D only
3. B and D only
4. A and D only
Subtopic: Monocot Leaf |
85%
Level 1: 80%+
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Conjoint vascular bundles are commonly seen in:
| 1. | Stems only | 2. | Root and Stems |
| 3. | Stems and Leaves | 4. | Root, Stems and Leaves |
Subtopic: Vascular Tissue System |
77%
Level 2: 60%+
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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 |
84%
Level 1: 80%+
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Which layer is most likely to have passage cells?
1. Pericycle
2. Epidermis
3. Endodermis
4. Cortex
1. Pericycle
2. Epidermis
3. Endodermis
4. Cortex
Subtopic: Ground Tissue System |
58%
Level 3: 35%-60%
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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 |
72%
Level 2: 60%+
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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 |
83%
Level 1: 80%+
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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 |
85%
Level 1: 80%+
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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 |
86%
Level 1: 80%+
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