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Q. No.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 |
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From NCERT
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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 |
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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
1. Tracheid
2. Xylem fibre
3. Xylem parenchyma
4. Vessel
Subtopic: Complex Tissue: Xylem |
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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:
1. B, C, D , E only
2. A, B, D, E only
3. A, B, C, D only
4. C, D, E only
| 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 |
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From NCERT
NEET - 2024
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The number of features seen in a dicotyledonous stem from among the features given below is:
| I: | Sclerenchymatous pericycle |
| II: | Casparian strips in endodermis are very common |
| III: | Collechymatous hypodermis |
| IV: | Conjoint open vascular bundles with exarch protoxylem |
| 1. | 4 | 2. | 3 |
| 3. | 2 | 4. | 1 |
Subtopic: Dicot Stem |
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From NCERT
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The cell layer from which lateral roots originate is the
1. epidermis
2. cortex
3. endodermis
4. pericycle
1. epidermis
2. cortex
3. endodermis
4. pericycle
Subtopic: Anatomy of Root |
63%
From NCERT
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Consider the following statements regarding the epidermal tissue system:
How many of the above statements are correct?
1. Only one statement
2. Only two statements
3. Only three statements
4. All four statements
| Statements A: | The epidermis is a single-layered structure made up of compactly arranged cells with a large nucleus and no vacuole. |
| Statements B: | The cuticle is a waxy layer present on the outer surface of the epidermis that helps in reducing water loss. |
| Statements C: | Stomata are structures present in the epidermis of leaves that regulate transpiration and gaseous exchange. |
| Statements D: | The guard cells of all plants are bean-shaped and regulate the opening and closing of stomata. |
1. Only one statement
2. Only two statements
3. Only three statements
4. All four statements
Subtopic: Epidermal Tissue System |
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A leaf with anatomy like the one shown in the given figure is expected to show:
1. Only A
2. Only B
3. Both A and B
4. Neither A nor B
| A: | more stomata in adaxial epidermis. |
| B: | reticulate venation. |
2. Only B
3. Both A and B
4. Neither A nor B
Subtopic: Dicot Leaf | Monocot Leaf |
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In a dicot stem:
1. Only a and b are correct
2. Only a and c are correct
3. Only b and c are correct
4. a, b and c are correct
| a. | Hypodermis has collenchymatous cells. |
| b. | Endodermis is the ‘starch sheath’. |
| c. | Pericycle is parenchymatous. |
1. Only a and b are correct
2. Only a and c are correct
3. Only b and c are correct
4. a, b and c are correct
Subtopic: Dicot Stem |
From NCERT
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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 |
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