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Q. No.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
Subtopic: Epidermal Tissue System |
90%
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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 |
95%
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In Dorsiventral (Dicotyledonous) Leaf:
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: | The adaxial epidermis generally bears more stomata than the abaxial epidermis. |
| II: | Mesophyll has two types of cells – the palisade parenchyma and the spongy parenchyma. |
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: Dicot Leaf |
84%
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In the transverse section of a dicot stem, the correct chronological order of the appearance of the following structures [from epidermis towards pith] will be:
| 1. | Hypodermis – Pericycle – Endodermis – Vascular bundles |
| 2. | Vascular bundles – Pericycle – Endodermis – Hypodermis |
| 3. | Hypodermis – Endodermis – Pericycle – Vascular bundles |
| 4. | Vascular bundles – Endodermis – Pericycle – Hypodermis |
Subtopic: Dicot Stem |
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Regarding endodermis of dicot 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: | It comprises a single layer of pear-shaped cells with well-developed intercellular spaces. |
| II: | The tangential as well as radial walls of the endodermal cells have a deposition of water-impermeable, waxy material suberin in the form of casparian strips. |
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: Anatomy of Root |
82%
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Consider the given two statements:
1. Statement I is incorrect; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is correct
4. Statement I is correct; Statement II is incorrect
| Statement I: | In roots, the protoxylem lies towards the centre (pith) and the metaxylem lies towards the periphery of the organ. |
| Statement II: | In stems, the protoxylem lies towards periphery and metaxylem lies towards the centre. |
1. Statement I is incorrect; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is correct
4. Statement I is correct; Statement II is incorrect
Subtopic: Anatomy of Root |
85%
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Ground tissue in plant body consists of:
1. Only I and II are correct
2. Only III and IV are correct
3. I, II, III and IV are correct
4. Only I, III and IV are correct
| I: | all tissues except epidermis and vascular bundles. |
| II: | simple tissues such as parenchyma, collenchyma and sclerenchyma. |
| III: | parenchymatous cells in cortex, pericycle, pith and medullary rays, in the primary stems and roots. |
| IV: | thin-walled chloroplast containing cells called mesophyll in leaves. |
1. Only I and II are correct
2. Only III and IV are correct
3. I, II, III and IV are correct
4. Only I, III and IV are correct
Subtopic: Ground Tissue System |
76%
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The development of the root primary xylem is said to be:
1. Exarch
2. Endarch
3. Centrifugal
4. Diffuse
1. Exarch
2. Endarch
3. Centrifugal
4. Diffuse
Subtopic: Complex Tissue: Xylem |
86%
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In the vascular bundle of a typical monocot such as corn, the structure that is most likely absent will be:
| 1. | Metaxylem | 2. | Cambium |
| 3. | Protoxylem lacuna | 4. | Metaphloem |
Subtopic: Vascular Tissue System |
91%
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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 |
70%
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