Q. No.Some vascular bundles are described as open because these
1. are surrounded by pericycle but no endodermis
2. are capable of producing secondary xylem and phloem
3. possess conjunctive tissue between xylem and phloem
4. are not surrounded by pericycle
1. are surrounded by pericycle but no endodermis
2. are capable of producing secondary xylem and phloem
3. possess conjunctive tissue between xylem and phloem
4. are not surrounded by pericycle
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 |
Cuticle:
1. is a covering, both outside and inside of the epidermis
2. is well developed in roots
3. helps in prevention of water loss
4. is a proteinaceous layer
In a dicot root, initiation of lateral roots and vascular cambium during the secondary growth takes place in the cells of:
| 1. | Outer cortex | 2. | Inner cortex |
| 3. | Endodermis | 4. | Pericycle |
The vascular bundles in a dicot stem are:
| 1. | conjoint, open with endarch protoxylem |
| 2. | conjoint, closed with endarch protoxylem |
| 3. | conjoint, open with exarch protoxylem |
| 4. | conjoint, closed with exarch protoxylem |
The incorrect statement regarding epidermal tissue system in angiosperms would be:
| 1. | It comprises of epidermal cells and stomata but not the appendages such as trichomes |
| 2. | It is the outermost layer of the primary plant body forming a continuous layer |
| 3. | It is usually single layered |
| 4. | Cells are parenchymatous with a large vacuole |
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 |
In a dicot root, the number of patches of xylem and phloem are usually:
| 1. | 2 to 4 | 2. | 4 to 6 |
| 3. | 6 to 8 | 4. | 8 to 10 |
Which of the following is a feature of the anatomy of a monocot stem?
| I: | Collenchymatous hypodermis |
| II: | Scattered vascular bundles |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Well developed pith is present in
1. Dicot stem, monocot root
2. Monocot stem, dicot root
3. Dicot root, dicot stem
4. Monocot root, monocot stem
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