Question

describe tunica corpus theory

Answer 1

A concept of the organization and development of the *apical meristem , in which the meristematic region is differentiated into an outer peripheral layer or layers, termed the tunica, and an inner mass of cells, termed the corpus. ... Compare histogen theory.

Answer 2

it was proposed by schmidt in 1924. it is based on plane of division of cells. according to this theory. shoot apex consists of 2 distinct layers
1-tunica -it is mostly single layered and forms epidermsis
2-corpus-it represebts central core with larger cells