Explain the function of each of the following
(i) Coleorhiza (ii) Germ pores

Explanation

(i) coleorhiza is a cap like structure present over the radicle in case of monocot seed, e.g. maize grain. During germination, it grows to form a small tubular structure, which protects the enclosed growing radicle, in early stages of development.
(ii) Germ pores are the areas on the wall of pollen grains where the exine is this or absent. The areas may have thickned intine or deposition of callose. The pollen tube comes out through one of the germ pores.