The center of a primary eudicot root is known as the:
a. cortex
b. pericycle

Cortex is the outer part of the pirmary dicot root.
Pericycle is at the center and inside the outermost part of the stele.

I’m not exactly sure what your trying to ask, but if it’s how an organelle is similar to a body system or a part a nucleus is like a in function. but i don’t fully understand what you’re trying to ask