Amanda is observing the transverse cross section of an apple root under the microscope. she has to locate the stele. which characteristic of stele will her to identify it?

a. it is present at the center of the root, surrounded by the pericycle, and has the vascular tissues like xylem, phloem, and cambium inside it.

b. it is present towards the boundary of the root, lined by the cortex, and has the tissues like parenchyma and collenchyma inside it.

c. it is present between the epidermis and the endodermis and has tissues like chlorenchyma inside it.

The correct answer is option A,

It is present at the center of the root, surrounded by the pericycle, and has the vascular tissues like xylem, phloem, and cambium inside

Reason:

In vesicular plant species, stele is  found in the central part of the stem and root. It majorly consists of vascular tissues with or without the pith. It is located adjacent to the cortex but separated by the endodermis. Its vasculature consists of Xylem and Phloem. It is further bounded by the one or more layer of cell called as pericycle.

friedrich meischer discovered it in white blood cell