Name and explain the surgical method advised to human males and females as a means of birth control. Mention its one advantage and one disadvantage.

One of the legal methods of birth control is :

Which one is the method of birth control ?

Which one is not terminal birth control method ?

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.

Express in one or two word(s) The chemical method of birth control is what?

Explain the development of a secondary oocyte (ovum) in a human female from the embryonic stage upto its ovulation. Name the hormones involved in this process.

(i) Explain the events taking place at the time of fertilisation of an ovum in a human female. (ii) Trace the development of the zygote up to its implantation in the uterus. (iii) Give the name and draw a labelled sectional view of the embryonic stage that gets implanted.