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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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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 |
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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All the following are examples of secondary or lateral meristems except:
1. Fascicular vascular cambium
2. Intercalary meristem
3. Interfascicular meristem
4. Cork cambium
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 |
Subtopic: Vascular Tissue System |
77%
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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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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 |
71%
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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 |
Subtopic: Dicot Stem |
86%
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