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how do organisms reproduce ? — Science STD 10 — Question

Gujarat BoardEnglish MediumSTD 10Sciencehow do organisms reproduce ?4 Marks
Question
Explain: Female reproductive system in human
✓

Answer

  • Female reproductive system consists of a pair of ovary, a pair of oviduct (fallopian tubes), an uterus, a vagina and vaginal opening.
Ovary:
  • One pair of ovary lie inside the abdominal cavity of a woman.
  • The female germ cells or eggs (ova) are formed in the ovaries.
  • Ovary produces female sex hormones such as estrogen and progesterone.
  • When a girl is born, the ovaries already contain thousands of immature eggs.
  • On reaching puberty, some of these egg cells start maturing.
  • One egg is produced every month by one of the ovaries.
  • Oviduct (Fallopian tube):
  • One pair of oviducts are present which are not attached to ovaries.
  • The egg is carried from the ovary to the uterus (womb) through a thin oviduct.
  • The fertilisation of egg cell by a sperm takes place in the initial part of the oviduct.
  • Uterus:
  • The two oviducts unite into an elastic bag-like structure called uterus.
  • The implantation and development of embryo occurs here.
  • The distal narrow end of uterus is called cervix.
  • Vagina:
  • Through the cervix, uterus opens in to tubular structure vagina.
  • Vagina opens outside through the vaginal opening.
  • The sperms enter through the vaginal passage during sexual intercourse.

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