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Q. No.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 |
79%
From NCERT
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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
1. Ring in tree for age measurement
2. width of tree
3. length of trees
4. types of wood
Subtopic: Types of Wood (OLD NCERT) |
84%
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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%
From NCERT
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Which of the following is not the feature of gymnosperms?
1. Parallel venation
2. Perennial plants
3. Distinct branches (long and short branches)
4. Xylem with vessels
1. Parallel venation
2. Perennial plants
3. Distinct branches (long and short branches)
4. Xylem with vessels
Subtopic: Complex Tissue: Xylem |
84%
From NCERT
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Which of the following theory gives the latest explanation for the closure of stomata?
1. ABA theory
2. Munch theory
3. Starch glucose theory
4. Active K+ transport theory
1. ABA theory
2. Munch theory
3. Starch glucose theory
4. Active K+ transport theory
Subtopic: Epidermal Tissue System |
60%
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Meristematic tissue in vascular bundle is
1. phellem
2. procambium
3. interfascicular cambium
4. fascicular cambium
1. phellem
2. procambium
3. interfascicular cambium
4. fascicular cambium
Subtopic: Activity of Vascular Cambium (OLD NCERT) |
From NCERT
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Vessels and companion cells are found in
1. angiosperm
2. pteridophytes
3. bryophytes
4. thallophytes
1. angiosperm
2. pteridophytes
3. bryophytes
4. thallophytes
Subtopic: Complex Tissue: Xylem |
92%
From NCERT
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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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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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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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