Closed vascular bundles lack
1. Ground tissue
2. Conjunctive tissue
3. Cambium
4. Pith
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Water containing cavities in vascular bundles are found in
1. Sunflower | 2. Maize |
3. Cycas | 4. Pinus |
Gymnosperms are also called soft wood spermatophytes because they lack
1. Cambium
2. Phloem fibres
3. Thick-walled tracheids
4. Xylem fibres
The common bottle cork is a product of
1. Dermatogen
2. Phellogen
3. Xylem
4. Vascular Cambium
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
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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
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Interfascicular cambium develops from the cells of:
1. Xylem parenchyma | 2. Endodermis |
3. Pericycle | 4. Medullary rays |
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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 |
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Tracheids differ from the tracheary elements in
1. Having casparian strips
2. Being imperforate
3. Lacking nucleus
4. Being lignified
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