Question

In Korper-Kappe theory,
A) Korper refers to mantle and kappe to body
B) Korper is cortex while kappe is cap
C) Korper is calyptrogens while kappe is rest of the meristem
D) Korper is equivalent to corpus and kappe to tunica

Answer 1

Hint: Korper is the inner area of the apex. The T is inverted in this area, i.e. the second division occurs in the upper daughter cell. Among the Gramineae and Fagaceae members, this form of division has been identified.

Complete Answer:
The cells of the root apex split in a T-shaped form, according to the theory. Schuepp (1917) put the idea forward. It is analogous to the shot apex tunica-corpus hypothesis. It is based on variations in cell division planes.

Now, let us find the solution from the options-
- The Korper-Kappe hypothesis is close to the shot apex tunic-corpus hypothesis.
-The Kappe is named the outer region of the root apex and the cells initially split horizontally in this region. The lower cell layer separates longitudinally.
-In the root's longitudinal segment, the planes of the two divisions create a T pattern.
- The Korper is considered the inner area of the root apex.
-The cell division creates an inverted T pattern in the inner region, at which second division happens in the upper daughter cell.
-The outer peripheral layer is considered the tunica in the tunica-corpus principle, and the inner cells are named the corpus.

Thus, the correct answer is option (D) Korper is equivalent to corpus and kappe to tunica.

Note: Although the root apex is sub-terminal, the shoot apex is completely terminal. Compared with the root apex, the shoot apex is moderately long. The shoot apex is dome-shaped while the outline of the root apex is cup-shaped.