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Q. No.In dicot stems, each vascular bundle is:
1. conjoint, open, and with endarch protoxylem.
2. conjoint, closed, and with endarch protoxylem.
3. radial, open, and with endarch protoxylem.
4. conjoint, open, and with exarch protoxylem.
1. conjoint, open, and with endarch protoxylem.
2. conjoint, closed, and with endarch protoxylem.
3. radial, open, and with endarch protoxylem.
4. conjoint, open, and with exarch protoxylem.
Subtopic: Dicot Stem |
89%
From NCERT
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The epidermal tissue system in plants:
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are correct
4. Only II and IV are correct
| I: | forms the outer-most covering of the whole plant body. |
| II: | comprises epidermal cells, stomata and the epidermal appendages – the trichomes and hairs. |
| III: | is usually multi-layered. |
| IV: | has parenchymatous cells without a vacuole. |
2. Only III and IV are correct
3. Only I and III are correct
4. Only II and IV are correct
Subtopic: Epidermal Tissue System |
91%
From NCERT
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In the transverse section of monocot stem, the highlighted portion [marked as X] is:
1. Sclerenchymatous hypodermis
2. Collenchymatous hypodermis
3. Suberised casparian strip
4. Starch sheath
1. Sclerenchymatous hypodermis2. Collenchymatous hypodermis
3. Suberised casparian strip
4. Starch sheath
Subtopic: Monocot Stem |
81%
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In Dorsiventral (Dicotyledonous) Leaf:
| 1. | The adaxially placed palisade parenchyma is made up of elongated cells, which are arranged vertically and parallel to each other. |
| 2. | The abaxially placed palisade parenchyma is made up of elongated cells, which are arranged vertically and parallel to each other. |
| 3. | The adaxially placed palisade parenchyma is made up of oval or round and loosely arranged spongy parenchyma and extends to the lower epidermis. |
| 4. | The abaxially placed palisade parenchyma is made up of oval or round and loosely arranged spongy parenchyma and extends to the lower epidermis. |
Subtopic: Dicot Leaf |
85%
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The phloem parenchyma is absent, and water-containing cavities are present within the vascular bundles in:
| 1. | Monocot roots | 2. | Dicot roots |
| 3. | Monocot stems | 4. | Dicot stems |
Subtopic: Monocot Stem |
85%
From NCERT
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The outside of the epidermis in plant body is often covered with a waxy thick layer called the cuticle which:
I: prevents the loss of water.
II: is present in roots.
1. I is correct; II is correct
2. I is incorrect; II is correct
3. I is incorrect; II is incorrect
4. I is correct; II is incorrect
I: prevents the loss of water.
II: is present in roots.
1. I is correct; II is correct
2. I is incorrect; II is correct
3. I is incorrect; II is incorrect
4. I is correct; II is incorrect
Subtopic: Epidermal Tissue System |
87%
From NCERT
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Stomatal apparatus in the epidermal tissue system of plants consists of:
| 1. | Only stomatal aperture and guard cells but not subsidiary cells. |
| 2. | Only stomatal aperture but not guard cells and subsidiary cells. |
| 3. | Only guard cells and subsidiary cells but not stomatal aperture. |
| 4. | Stomatal aperture, guard cells and subsidiary cells but not other epidermal cells. |
Subtopic: Epidermal Tissue System |
94%
From NCERT
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | The root hairs are unicellular elongations of the epidermal cells and help absorb water and minerals from the soil. |
| Statement II: | The trichomes in the shoot system are usually multicellular, branched or unbranched, soft or stiff, may even be secretory and help in preventing water loss due to transpiration. |
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Epidermal Tissue System |
93%
From NCERT
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The highlighted portion [in blue colour; marked as X] in the given T.S. of a monocot root is the outermost layer of the stele. This is the:
1. Hypodermis
2. Cortex
3. Pericycle
4. Endodermis
1. Hypodermis
2. Cortex
3. Pericycle
4. Endodermis
Subtopic: Anatomy of Root |
64%
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Identify the correct description of the structure shown in the given figure:
| 1. | It shows stomatal apparatus of almost all plants except grasses where A represents guard cells and B represents subsidiary cells. |
| 2. | It shows stomatal apparatus of almost all plants except grasses where A represents subsidiary cells and B represents guard cells. |
| 3. | It shows stomatal apparatus of grasses where A represents subsidiary cells and B represents guard cells. |
| 4. | It shows stomatal apparatus of grasses where A represents guard cells and B represents subsidiary cells. |
Subtopic: Epidermal Tissue System |
88%
From NCERT
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