Describe briefly the tunica-corpus theory.

Explanation

Tunica-corpus theory . Schmidt proposed the Tunica-Corpus Theory (1924) to explain the structure of apical meristem. He explained that intercalary meristem differentiated into a central mass undifferentiated large cells called corpus and outer layer of small cells called tunica. The cells of tunica undergo anticlinal divisions while the cells of corpus divide in different planes to produce procambium , cortical cells and leaf primordia.