In the surgical method of birth control available for males, the structures A in the reproductive system are cut and ligated (tied up) at both ends. This prevents the reproductive cells B from coming out from the organs C where they are made in the male body. Since B cannot come out from the male body, they cannot fuse with cell D in the body of a female and hence pregnancy is prevented.
(a) What are structures A?
(b) What are cells B?
(c) Name the organs C.
(d) What is cell D?
(e) What is the name of this surgical procedure for birth control available to males?

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Solution

(a) A represents the vas deferens.

(b) B represents sperms.

(c) C represents the testes.

(d) The cell D is the egg or ova.

(e) The surgical method of birth control available to males is called vasectomy.

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In the surgical method of birth control available for males, the structures A in the reproductive system are cut and ligated (tied up) at both ends. This prevents the reproductive cells B from coming out from the organs C where they are made in the male body. Since B cannot come out from the male body, they cannot fuse with cell D in the body of a female and hence pregnancy is prevented.
(a) What are the structures A?
(b) What are the cells B?
(c) Name the organs C.
(d) What is cell D?
(e) What is the name of this surgical procedure for birth control available to males?

In the surgical method of birth control available for human females, the structures P in the reproductive system are cut and ligated (tied up) properly at both ends. This prevents the reproductive cell Q released by an organ R from entering the structures P so that Q is not available to fuse with another reproductive cell S coming from the male reproductive system. In this way, pregnancy is prevented.
(a) What are the structures P?
(b) What is cell Q?
(c) Name the organ R.
(d) What is the reproductive cell S?
(e) What is the name of this surgical method of birth control available to females?

(a) What is the name of the surgical method of birth control in human males in which the sperm ducts are cut and ligated (tied) at both ends?
(b) What is the name of the surgical method of birth control in human females in which the oviducts are cut and ligated (tied) at both ends?
(c) Name the contraceptive device used by the human males which act as a sheath over the male organ and traps the sperms in it.
(d) Name the contraceptive device used by human females which are put over the cervix.

Q. Which of the following statements are correct regarding surgical methods of contraception?
(i) These are generally advised to the male/female partner as a terminal method to prevent any more pregnancies.
(ii) Surgical procedure in male is called tubectomy and that in the female,
vasectomy.
(iii)
Reversibility is easily possible.
(iv)
They block gamete transport and thereby prevent conception.

Q. 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?

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(a) A represents the vas deferens.(b) B represents sperms.(c) C represents the testes.(d) The cell D is the egg or ova.(e) The surgical method of birth control available to males is called vasectomy.

(a) A represents the vas deferens.

(b) B represents sperms.

(c) C represents the testes.

(d) The cell D is the egg or ova.

(e) The surgical method of birth control available to males is called vasectomy.