Q. No.The meristem that helps grasses regenerate parts removed by the grazing herbivores is the:
1.
Shoot apical meristem
2.
Root apical meristem
3.
Intercalary meristem
4.
Lateral meristem
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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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All the following are examples of secondary or lateral meristems except:
| 1. | Fascicular vascular cambium | 2. | Intercalary meristem |
| 3. | Interfascicular meristem | 4. | Cork cambium |
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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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The term ‘stele’in a dicot root does not include:
| 1. | Endodermis | 2. | Pericycle |
| 3. | Vascular bundles | 4. | Pith |
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The xylem tissue in gymnosperms lacks:
1. Tracheids
2. Vessels
3. Xylem fibers
4. Xylem parenchyma
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The hypodermis of a dicotyledonous stem:
1. is parenchymatous and synthesizes and stores food
2. is collenchymatous and provides mechanical strength to the young stem
3. is sclerenchymatous and provides mechanical strength to the young stem
4. is parenchymatous and provides mechanical strength to the young stem
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The ring arrangement of vascular bundles is a characteristic feature of:
| 1. | Monocot stem | 2. | Dicot stem |
| 3. | Monocot root | 4. | Dicot root |
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In a monocot stem:
1. Each vascular bundle is surrounded by a sclerenchymatous bundle sheath
2. Ground tissue is very poorly developed
3. Vascular bundles are conjoint and open with water containing cavities
4. Phloem parenchyma is present
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