In radial vascular bundle xylem and phloem are present on _____________radii and in an ___________manner.
| 1. | different and consecutive |
| 2. | same and alternate |
| 3. | different and alternate |
| 4. | same and consecutive |
In conjoint type vascular bundle xylem and phloem are present on _________ radii and & phloem is located on the __________side of the xylem.
1. same and outer
2. same and inner
3. different and inner
4. different and outer
Conjoint vascular bundles are most common in
| 1. | root, stem, and leaves |
| 2. | root and stem |
| 3. | stem and leaves |
| 4. | root and leaves |
Conjoint open vascular bundles are present in
| 1. | stem of dicots only |
| 2. | stem of dicots and gymnosperms |
| 3. | stem of monocots and gymnosperms |
| 4. | stem of monocots only |
The outermost layer of the root is
1. epidermis
2. endodermis
3. hypodermis
4. dermis
Root hairs arise from__________
| 1. | epidermis | 2. | endodermis |
| 3. | pericycle | 4. | cortex |
Root hairs are ____________ and formed from __________zone of root.
| 1. | unicellular, maturation |
| 2. | multicellular, elongation |
| 3. | multicellular, maturation |
| 4. | unicellular, elongation |
Epidermis of root is also known as
1. epiblema
2. piliferous layer
3. Rhizodermis
4. All of the above
Cortex consists of
| 1. | parenchymal cells with intracellular spaces |
| 2. | parenchymal cells with intercellular spaces |
| 3. | collenchymal cells with intracellular spaces |
| 4. | collenchymal cells with intercellular spaces |
The innermost layer of the cortex is called
| 1. | pericycle |
| 2. | endodermis |
| 3. | vascular bundle |
| 4. | epidermis |