Closed vascular bundles lack
1. Ground tissue
2. Conjunctive tissue
3. Cambium
4. Pith

Subtopic:  Vascular Tissue System |
 85%

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Water containing cavities in vascular bundles are found in

1. Sunflower 2. Maize
3. Cycas 4. Pinus
Subtopic:  Vascular Tissue System |
 65%

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Gymnosperms are also called soft wood spermatophytes because they lack
1. Cambium
2. Phloem fibres
3. Thick-walled tracheids
4. Xylem fibres

Subtopic:  Complex Tissue: Xylem |

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The common bottle cork is a product of
1. Dermatogen
2. Phellogen
3. Xylem
4. Vascular Cambium

Subtopic:  Activity of Cork Cambium |
 71%

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As compared to a dicot root, a monocot root has
1. More abundant secondary xylem
2. Many xylem bundles
3. Inconspicuous annual rings
4. Relatively thicker periderm

Subtopic:  Anatomy of Root |
 77%
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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:  Types of Wood (OLD NCERT) |
 94%
From NCERT

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Interfascicular cambium develops from the cells of:

1. Xylem parenchyma 2. Endodermis
3. Pericycle 4. Medullary rays
Subtopic:  Activity of Vascular Cambium (OLD NCERT) |
 69%
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You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two?

1. Secondary xylem 2. Secondary phloem
3. Protoxylem 4. Cortical cells
Subtopic:  Anatomy of Root | Dicot Stem |
 77%
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Tracheids differ from the tracheary elements in
1. Having casparian strips
2. Being imperforate
3. Lacking nucleus
4. Being lignified

Subtopic:  Complex Tissue: Xylem |
 56%

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A major characteristic of the monocot root is the presence of
1. Scattered vascular bundles
2. Vasculature without cambium
3. Cambium sandwiched between phloem and xylem along the radius
4. Open vascular bundles

Subtopic:  Anatomy of Root |
 59%

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