describe the three ways in which fertilization of human ovum by the sperm can be prevented.

Dear student,
Please find below the solution to the asked query

Some of the contraceptive methods by which fertilisation of ovum by sperm can be prevented are:

• Barrier method → In this method, the fertilization of ovum and sperm is prevented with the help of barriers. Condoms are barriers that prevent pregnancy.

• Oral contraceptives →  These are taken orally. They contain hormones—either progesterone or progesterone−oestrogen combination and prevent the release of eggs and thus fertilisation.

• Intra uterine devices   (IUDs) : They release hormones to cause phagocytosis of sperms or they release copper ions to decrease sperm motility.
• Surgical methods : Include vasectomy (removal of a part of the vas deferens in males) and tubectomy (removal of a part of the fallopian tubes in females)

 
Hope this information will clear your doubts about the contraceptive methods.
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