- 1(current)
Q. No.In the primary stems and roots, the type of cells usually present in cortex, pith and medullary rays is:
| 1. Parenchyma | 2. Collenchyma |
| 3. Sclerenchyma | 4. Meristem |
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Anatomically, fairly old dicotyledonous root is distinguished from the dicotyledonous stem by
1. Position of protoxylem
2. Absence of secondary xylem
3. Absence of secondary phloem
4. Presence of cortex
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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
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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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Cortex is the region found between
1. endodermis and vascular bundle
2. epidermis and stele
3. pericycle and endodermis
4. endodermis and pith
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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
The entrance of minerals into the vascular cylinder in the dicot root is regulated by:
| 1. | epidermis | 2. | pericycle |
| 3. | endodermis | 4. | root hairs |
- 1(current)
Q. No.
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