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Q. No.What is the number of correct statements from those given below?
| I: | Primary xylem is endarch in roots |
| II: | Phloem parenchyma is present in most of the monocots. |
| III: | Phloem fibers are generally absent in the primary phloem. |
| IV: | Companion cells are collenchymatous cells. |
| V: | Angiosperms lack vessels in their xylem. |
1. 0
2. 1
3. 2
4. 3
Subtopic: Complex Tissue: Xylem | Complex Tissue: Phloem |
54%
Level 3: 35%-60%
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Consider the given two statements:
| Statement I: | Parenchyma cells are loosely packed and have large intercellular spaces. |
| Statement II: | Collenchyma cells are thin-walled and primarily serve to transport nutrients. |
| 1. | Only Statement I is correct. |
| 2. | Only Statement II is correct. |
| 3. | Both Statement I and Statement II are correct. |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Simple Tissue: Parenchyma | Simple Tissue: Chollenchyma & Sclerenchyma |
56%
Level 3: 35%-60%
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What are the distinctive features of collenchyma cells?
| 1. | They are elongated cells with thickened lignified cell walls. |
| 2. | They are dead cells that provide structural support. |
| 3. | They are elongated cells with unevenly thickened non-lignified cell walls. |
| 4. | They contain chloroplasts and primarily function in storage. |
Subtopic: Simple Tissue: Chollenchyma & Sclerenchyma |
51%
Level 3: 35%-60%
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Which of the following cell type of vascular tissue system of plants is not correctly matched with its function?
| Cell type | Function | |
| 1. | Tracheid | Chief water conduction element in gymnosperms |
| 2. | Vessel element | Chief water conduction element in angiosperms |
| 3. | Sieve cell | Food conduction element in angiosperms |
| 4. | Albuminous cell | Delivery of substances to sieve cells |
Subtopic: Complex Tissue: Phloem |
54%
Level 3: 35%-60%
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Consider the given two statements:
| Assertion (A): | Grasses can regenerate parts lost due to grazing herbivores. |
| Reason (R): | Grasses have secondary meristems like intercalary meristem. |
| 1. | Both (A) and (R) are True and (R) explains (A) |
| 2. | Both (A) and (R) are True but (R) does not explain (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Meristematic Tissues |
61%
Level 2: 60%+
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Which of the following is/are a correct match?
| I: | Bulliform cells | large, bubble-shaped epidermal cells that occur in groups on the upper surface of the leaves of many monocots. |
| II: | Lenticels | a porous tissue consisting of cells with large intercellular spaces in the periderm of the secondarily thickened organs and the bark of woody stems and roots of dicotyledonous flowering plants |
| 1. | Only I |
| 2. | Only II |
| 3. | Both I and II |
| 4. | Neither I nor II |
Subtopic: Monocot Leaf | Activity of Cork Cambium |
56%
Level 3: 35%-60%
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The type of tissue commonly found in the fruit wall of nuts is :
| 1. | Parenchyma | 2. | Collenchyma |
| 3. | Sclerenchyma | 4. | Sclereid |
Subtopic: Simple Tissue: Chollenchyma & Sclerenchyma |
62%
Level 2: 60%+
NEET - 2022
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The given figure, with reference to the anatomy of plants, represents:
| 1. | Tracheid | 2. | Xylem fibre |
| 3. | Xylem parenchyma | 4. | Vessel |
Subtopic: Complex Tissue: Xylem |
60%
Level 2: 60%+
NEET - 2024
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Read the following statements and find out the correct set of statements:
Choose the correct answer from the options given below:
| A. | Companion cells help in maintaining the pressure gradient in the sieve tubes. |
| B. | Gymnosperms lack vessels in their xylem |
| C. | The xylem vessels are devoid of cytoplasm |
| D. | Xylem fibres may be septate or aseptate |
| E. | A mature sieve element in phloem possesses cytoplasm, vacuole and nucleus. |
| 1. | B, C, D, E only | 2. | A, B, D, E only |
| 3. | A, B, C, D only | 4. | C, D, E only |
Subtopic: Complex Tissue: Xylem | Complex Tissue: Phloem |
72%
Level 2: 60%+
NEET - 2024
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Which of the following statements is not true for stomatal apparatus?
| 1. | Inner walls of guard cells are thick |
| 2. | Guard cells invariably possess chloroplasts and mitochondria |
| 3. | Guard cells are always surrounded by subsidiary cells |
| 4. | Stomata are involved in gaseous exhange |
Subtopic: Epidermal Tissue System |
Level 3: 35%-60%
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