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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. |
Subtopic: Dicot Stem |
89%
Level 1: 80%+
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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 |
90%
Level 1: 80%+
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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 |
Subtopic: Monocot Stem |
81%
Level 1: 80%+
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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%
Level 1: 80%+
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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%
Level 1: 80%+
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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%
Level 1: 80%+
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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%
Level 1: 80%+
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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%
Level 1: 80%+
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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 |
Subtopic: Anatomy of Root |
64%
Level 2: 60%+
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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 |
87%
Level 1: 80%+
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