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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%
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Consider the given two statements:
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%
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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%
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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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Initiation of lateral roots and vascular cambium during the secondary growth in dicot roots takes place in:
1. Epidermis
2. Cortex
3. Endodermis
4. Pericycle
 88%
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The given figure shows the transverse section of:
    
1. Dicot root
2. Monocot root
3. Dicot stem
4. Monocot stem
Subtopic:  Anatomy of Root |
 75%
From NCERT
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Identify the correctly matched pair:
Types of vascular tissue Present in
I. Roots
II. Monocot stems
1. I only
2. II only
3. Both I and II
4. Neither I nor II
Subtopic:  Anatomy of Root | Monocot Stem |
 90%
From NCERT
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The ‘stele’ in a dicot root will include all the following except:
1. Endodermis
2. Pericyle
3. Vascular bundles
4. Pith
Subtopic:  Anatomy of Root |
 80%
From NCERT
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The parallel venation in monocot leaves is reflected in the:
1. near similar sizes of vascular bundles, including main veins, as seen in vertical sections of the leaves.
2. near similar sizes of vascular bundles, except in main veins, as seen in vertical sections of the leaves.
3. large sizes of vascular bundles in mid rib and smaller in veins, as seen in vertical sections of the leaves.
4. smaller sizes of vascular bundles in mid rib and larger in veins, as seen in vertical sections of the leaves.
Subtopic:  Monocot Leaf |
 70%
From NCERT
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In Dorsiventral (Dicotyledonous) Leaf:
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 |
 83%
From NCERT
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