What would be true for A and B shown in the given diagram?


1. A shows open stomatal aperture while B shows closed stomatal aperture
2. A shows closed stomatal aperture while B shows open stomatal aperture
3. A shows the stomata in grasses
4. B shows the stomata in grasses

Subtopic:  Epidermal Tissue System |
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The incorrect statement regarding epidermal tissue system in angiosperms would be:
1. It comprises of epidermal cells and stomata but not the appendages such as trichomes
2. It is the outermost layer of the primary plant body forming a continuous layer
3. It is usually single layered
4. Cells are parenchymatous with a large vacuole

Subtopic:  Epidermal Tissue System |
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All the following are true for trichomes except:
1. they are usually unicellular
2. they may be branched
3. they may be secretory
4. they help in prevention of water loss due to transpiration

Subtopic:  Meristematic Tissue:Classification (OLD NCERT) |
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Mesophyll cells present in the ground tissue of leaves are:
1. chloroplasts lacking thin walled cells
2. chloroplasts containing thick walled cells
3. chloroplasts containing thin walled cells
4. chloroplasts lacking thick walled cells

Subtopic:  Vascular Tissue System |
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Open vascular bundles:
I. have cambium present between xylem and phloem
II. possess the ability to form secondary tissues
III. are rare in dicotyledonous stems

1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct

Subtopic:  Vascular Tissue System |
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In conjoint type of vascular bundles:

I: xylem and phloem are jointly situated on the same radius of vascular bundles.
II: xylem is usually located on the outer side of the phloem.
 
1. Only I is correct 2. Only II is correct
3. Both are correct 4. Both are incorrect
Subtopic:  Vascular Tissue System |
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Casparian strips are:

1. waxy deposition of suberin on only the tangential walls of the endodermal cells
2. waxy deposition of suberin on only the radial walls of the endodermal cells
3. waxy deposition of suberin on both tangential and radial walls of the endodermal cells
4. waxy deposition of lignin on both tangential and radial walls of the endodermal cells
Subtopic:  Dicot Stem |
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In a dicot root, the number of patches of xylem and phloem are usually:

1. 2 to 4 2. 4 to 6
3. 6 to 8 4. 8 to 10
Subtopic:  Anatomy of Root |
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The term ‘stele’in a dicot root does not include:

1. Endodermis 2. Pericycle
3. Vascular bundles 4. Pith
Subtopic:  Anatomy of Root |
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Monocot root anatomy is different from the anatomy of dicot root in all the following aspects except:
1. More developed pith
2. Polyarch vascular bundles
3. Absence of secondary growth
4. Presence of multicellular root hairs

Subtopic:  Anatomy of Root |
 70%
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