Question

Fascicular cambium is the cambium of the vascular bundle of
A.Monocot stem
B.Dicot stem
C.Monocot leaf
D.Dicot leaf

Answer 1

We know that vascular cambium is the meristematic tissue that helps the production of xylem and phloem tissues. These tissues together form the vascular bundle. Vascular cambium is initially seen as small patches and later it forms a complete ring.

Complete answer: We know that secondary growth is responsible for the lateral growth of the plant which helps to increase girth. Lateral meristem is responsible for this whereas apical meristem is responsible for the primary growth. The lateral meristem consists of two types of tissues. They are vascular cambium and cork cambium.
Vascular cambium is responsible for the production of vascular bundles. In dicot stem, cambium which is present between the primary xylem and primary phloem is called intrafascicular cambium. So the cambium of the vascular bundle of dicot plants is called fascicular cambium. It is seen initially as patches. Gradually, cells that are present next to the intrafascicular cambium called medullary rays become meristematic and together form a ring structure. No continuous cambial ring is formed.
We Know that the cambial ring formed in the dicot stem is able to produce new xylem and phloem tissues. They are called secondary xylem and secondary phloem respectively as they are secondary in origin. Secondary xylem is produced towards the center while secondary phloem is produced towards the outside.
Hence the correct option is B.

Note: We Know that cork cambium is the meristematic tissue formed to repair the broken cortex due to the activity of vascular cambium in the dicot stem. Cork cambium along with vascular cambium forms the lateral meristem.