Closed vascular bundles lack:
1. Ground tissue
2. Conjuctive tissue
3. Cambium
4. Pith
In Dicots, Secondary growth is possible because of
1. | cambium |
2. | xylem and Phloem |
3. | Vascular bundle |
4. | Both 2. and 3. |
Radial vascular bundle arrangement is most common in
1. roots
2. stem, and roots
3. leaves
4. All of the above
Vascular bundles in monocotyledons are considered closed because:
1. | a bundle sheath surrounds each bundle |
2. | cambium is absent |
3. | there are no vessels with perforations |
4. | xylem is surrounded all around by phloem |
In dicot stem the vascular bundle is:-
1. | Conjoint, open and with exarch protoxylem. |
2. | Conjoint, open and with endarch protoxylem. |
3. | Conjoint and closed. |
4. | Scattered, each surrounded by a sclerenchymatous bundle sheath. |
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 |
The vascular bundle shown in the diagram is most likely to be seen in:
1. | Monocot stem | 2. | Dicot stem |
3. | Monocot root | 4. | Dicot root |
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 |
Some vascular bundles are described as open because these:
1. | are not surrounded by pericycle |
2. | are surrounded by pericycle but no endodermis |
3. | are capable of producing secondary xylem and phloem |
4. | possess conjunctive tissue between xylem and phloem |