The correct option is
D Korper is equivalent to corpus and kappe to tunica
- According to tunica-corpus theory shoot apex is divided into two tissue zones known as tunica and corpus.
- The shoot apex is composed of two layers of cells of tunica and corpus (layer L1, L2 and L3 to denote the outer layer of tunica, the inner layer of tunica and corpus respectively).
- According to Korper-Kappe theory, the cells in the root apex divide in a T-shaped pattern.
- The outer part of the root apex is called the Kappe and the cells here divide horizontally first and the lower cell divides longitudinally ( right angles to the plane of the first division).
- The inner part of the apex is the Korper. and the cells in this region forms an inverted T pattern as here the second division takes place in the upper cell.
- So, the correct answer is 'Korper is equivalent to corpus and kappe to tunica'.