The protective covering over radical during the germination of seeds is

The correct option is Coleorhiza.

During the germination of monocotyledonous seeds (such as maize or wheat), the developing embryo has two main protective sheaths for its emerging structures:
1. Coleoptile: A protective sheath that covers the young shoot apex or plumule.
2. Coleorhiza: A protective, undifferentiated sheath that covers the young root tip or radicle.

As the seed absorbs water and germinates, the radicle is the first structure to break through the seed coat to establish the root system. The coleorhiza surrounds the radicle and protects it from physical damage as it pushes through the soil. Therefore, the protective covering over the radicle is the coleorhiza.