(a) The fluid surrounding the developing embryo.

(b) The body part in which the embryo develops.

(c) The membrane which protects the foetus and encloses a fluid.

(d) The canal through which the testes descend into the scrotum just before birth in human male child.

Solution:-

(a) The amniotic fluid surrounding the developing embryo.

(b) Uterus is the body part in which the embryo develops.

(c) Amniotic membrane which protects the foetus and encloses a fluid.

(d) Inguinal canal through the testes descends into the scrotum just before birth in a human male child.