Q. No.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 |
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
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 |
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 |
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
© 2025 GoodEd Technologies Pvt. Ltd.