X and Y are two human beings. The organ A in the reproductive system of X releases a mature gamete B once a month which goes into a tube-like structure C through a funnel-like opening. The organ D in the reproductive system of Y makes and releases gametes E which pass through a duct F and are introduced by an organ of Y, into the body of X. B and E fuse together in C to form a new cell G. The cell G divides repeatedly to form a ball of cells H which gets embedded in the lining of organ I of reproductive system of X where it grows and develops into a baby.
(a) Name (i) organ A, and (ii) gamete B.
(b) Write two names of tube-like structure C.
(c) Name (i) organ D, and (ii) gamete E.
(d) Write two names of duct F.
(e) Name (i) cell G (ii) ball of cells H, and (iii) organ.
(f) Out of X and Y, which one is (i) male, and (ii) female?

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Solution

(a) (i) The organ A is the ovary and (ii) the gamete B is an egg.

(b) The tube-like structure C is the oviduct or the fallopian tube.

(c) (i) D represents the testes and (ii) the gamete E represents sperm.

(d) The duct F is the sperm duct or the vas deferens.

(e) (i) The cell G is the zygote, (ii) the ball of cells H is the embryo and (iii) the organ is the uterus.

(f) (i) X represents female and (ii) Y represents male.

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