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 I.
(f) Out of X and Y, which one is (i) male, and (ii) female?

(a)  (i) Organ A that releases mature gamete once a month is an ovary and (ii) the mature gamete B it releases is an egg or ovum. (b) The tube-like structure C where an egg goes is known as the fallopian tube or an oviduct.

(c) (i) Organ D is testes as it produces gamete E, that is (ii) Sperm which is introduced in the body of X.

(d) The duct F through which gamete E, sperm, passes is sperm duct or vas deferens.

(e) (i) Cell G is Zygote (ii) Zygote divides repeatedly to form a ball of cells that is known as the embryo and (iii) Organ I where embryo embedded or implants is known as uterus.

(f) As X releases mature gametes every month, it is female and Y is male.

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Updated on: 21-Mar-2023

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