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Q. No.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 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 |
90%
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 |
95%
From NCERT
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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%
From NCERT
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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 |
90%
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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