Q. No.The type of vascular bundles shown in the given figure would most likely be seen in:
1.
Dicotyledonous stem
2.
Roots
3.
Monocotyledonous stem
4.
Leaves
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The vascular bundles in a dicot stem are:
1. conjoint, open with endarch protoxylem
2. conjoint, closed with endarch protoxylem
3. conjoint, open with exarch protoxylem
4. conjoint, closed with exarch protoxylem
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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
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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
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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
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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
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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
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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 |
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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 |
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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 |
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