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how do organisms reproduce ? — Science STD 10 — Question

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

Answer

  • The male reproductive system consists of two parts:
  • $(1)$ Part which produce the germ cell and
  • $(2)$ Part that delivers the germ cells to the site of fertilisation.
  • Testes:
  • 1 pair, located outside the abdominal cavity in scrotum.
  • This is because sperm formation requires $2-3 °C$ lower temperature than the normal body temperature $(37 °C)$.
  • The formation of germ cells or sperms takes place in the testes.
  • Testes secrete male sex hormone testosterone.
  • In boys testosterone regulates the formation of sperms, and brings about secondary sexual changes at the time of puberty.
  • Vas deferens:
  • The sperms formed are delivered through these ducts unite with a tube coming from the urinary bladder.
  • Urethra:
  • It is a common passage for the sperms and urine.
  • Accessory glands:
  • Along the path of the vas deferens, glands like prostate and the seminal vesicles add their secretions.
  • This secretory fluid makes transport of sperms easier and also provides nutrition to the sperms for their motility.

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