Write the function of each of the following :
(a) Seminal vesicle
(b) Scutellum
(c) Acrosome of human sperm.

Explanation

(a) Seminal vesicle. It secretes an alkaline fluid that helps in neutralizing the acidity of the vaginal tract thereby increasing the life span of sperms. Secretion of seminal vesicle is also a source of nutrition for the sperms.
(b) Scutellum. The single cotyledon present in seed (e.g.. Maize) is called scutellum. It occupies the major part of the embryo. Its outermost part is called epithelial layer. It is both secretory and absorptive. The epithelial layer secretes hormones into the endosperm for the synthesis of enzymes required for solubilisation of food. The solubilised food is absorbed by it and then transferred to the embryo axis.
(c) Acrosome. It is the cap-like covering or structure that is present at the tip of the sperm (male gamete). The acrosome contains enzymes which help the sperm enter into the cytoplasm of the ovum and thus helps in fertilization.