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Q. No.Stomata in grass leaves are:
1. Dumb-bell shaped
2. Kidney shaped
3. Rectangular
4. Barrel-shaped
Subtopic: Â Epidermal Tissue System |
 91%
From NCERT
NEET - 2018
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Secondary xylem and phloem in dicot stem are produced by?
| 1. | Apical meristems | 2. | Vascular cambium |
| 3. | Phellogen | 4. | Axillary meristems |
Subtopic: Â Dicot Stem |
 85%
From NCERT
NEET - 2018
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Subtopic: Â Anatomy of Root |
 78%
From NCERT
NEET - 2018
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Plants having little or no secondary growth are:
1. Grasses
2. Deciduous angiosperms
3. Conifers
4. Cycads
2. Deciduous angiosperms
3. Conifers
4. Cycads
Subtopic: Â Secondary Growth in Root (OLD NCERT) |
 85%
From NCERT
NEET - 2018
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Specialised epidermal cells surrounding the guard cells are called?
1. subsidiary cells
2. bulliform cells
3. lenticels
4. complementary cells
2. bulliform cells
3. lenticels
4. complementary cells
Subtopic: Â Epidermal Tissue System |
 92%
From NCERT
NEET - 2016
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Read the different components from I to IV in the list given below and tell the correct order of the components with reference to their arrangement from the outer side to the inner side in a woody dicot stem.
| I. | Secondary Cortex |
| II. | Wood |
| III. | Secondary phloem |
| IV. | Phellem |
The correct order is:
| 1. | III, IV, II, I | 2. | I, II, IV, III |
| 3. | IV, I, III, II | 4. | IV, III, I, II |
Subtopic: Â Dicot Stem |
 58%
From NCERT
NEET - 2015
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Vascular bundles in monocotyledons are considered closed because:
| 1. | a bundle sheath surrounds each bundle |
| 2. | cambium is absent |
| 3. | there are no vessels with perforations |
| 4. | xylem is surrounded all around by phloem |
Subtopic: Â Vascular Tissue System |
 88%
From NCERT
NEET - 2015
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Age of a tree can be estimated by:
1. biomass
2. number of annual rings
3. diameter of its heartwood
4. its height and girth
Subtopic: Â Types of Wood (OLD NCERT) |
 95%
From NCERT
AIPMT - 2013
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Lenticels are involved in:
1. Gaseous exchange
2. Food transfer
3. Photosynthesis
4. Transpiration
Subtopic: Â Activity of Cork Cambium |
 94%
From NCERT
AIPMT - 2013
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Interfascicular cambium develops from the cells of:
1. Xylem parenchyma
2. Endodermis
3. Pericycle
4. Medullary rays
Subtopic: Â Activity of Vascular Cambium (OLD NCERT) |
 76%
From NCERT
AIPMT - 2013
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