These surgical methods block the gamete transport and prevent contraception. This method of contraception in males is called as vasectomy and in females is called as tubectomy.
Explanation: In these techniques, a small part of the fallopian tube (in females) or vas deferens (in males) is removed or tied up to prevent the transfer of ovum or sperms respectively.
Advantage- They are highly effective.
Disadvantage: They are irreversible.
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