(a) Name the human male reproductive organ that produces sperms and also secretes a hormone. Write the functions of the secreted hormone. (b) Name the parts of the human female reproductive system where (i) fertilisation takes place. (ii) implantation of the fertilised egg occurs. Explain how the embryo gets nourishment inside the mother's body.
Answers
(b) (i) Fertilisation takes place in the fallopian tube (oviduct). (ii) Implantation of the fertilised egg occurs in the uterus. The embryo develops inside the mother’s body for about nine months. Inside the uterus, the outer tissue surrounding the embryo develops finger-like projections called villi. These villi are surrounded by uterine tissue and maternal blood. They provide a large surface area for the exchange of oxygen and nutrients. There is a special tissue called placenta embedded in the uterine wall. The embryo receives the oxygen and nutrients from the mother’s blood via the placenta. The waste material produced by the embryo is removed through the placenta.
Answer:
Explanation:
Answer :-
(a) The organ that produces sperms as well as secretes male hormone is known as testis. This hormone is secreted by it is testosterone.
Functions of testosterone are:
(i) It stimulates sperm production.
(ii) It stimulates the internal development of secondary sexual characters in male body.
(iii) It is involved in the development, maturation, and functioning of accessory sex organs like vas deferens and seminal vesicles.
(b) Fallopian tubes
(c) The embryo gets nourishment from the mother's blood with the help of a special tissue called the placenta. This is a disc that is embedded in the uterine wall. It contains villi on the embryo's side on the tissue. On the mother's side are the blood spaces, which surround the villi.