Question

The layers of cells lying between endodermis and vascular bundle is

• A. Cortex
• B. Pith
• C. Pericycle
• D. Exodermis

Answer 1

The correct option is C Pericycle

The pericycle is a cylinder of parenchyma or sclerenchyma cells that lies just inside the endodermis and is the outer most part of the stele of plants. Although, it is composed of non-vascular parenchyma cells, it is still considered part of the vascular cylinder because it arises from the procambium as do the vascular tissues it surrounds. In eudicots, it also has the capacity to produce lateral roots. Branch roots arise from this primary meristem tissue. In plants undergoing secondary growth, the pericycle contributes to the vascular cambium often diverging into a cork cambium. The pericycle is located between the endodermis and phloem in plant roots. In dicot stems, it is situated around the ring of vascular bundles in the stele. So, the layers of cells lying between endodermis and vascular bundle is pericycle.
Cortex in plants, tissue of unspecialized cells lying between the epidermis and the vascular or conducting tissues of stems and roots. The pith is encircled by a ring of xylem, the xylem, in turn, is encircled by a ring of phloem. The exodermis is a layer of cells from the outermost layer of the cortex of many angiosperms. Cortex, pith and exodermis are not present in between endodermis and vascular bundle.
Thus, the correct answer is option C.