In most of the mammals,the testes are situated outside the abdominal cavity because

  • A
    Sperms produced in the scrotal sac are more in number
  • B
    Sperms produced in the abdominal cavity are provided with less motility
  • C
    Sperms produced in the scrotal sac require a lower temperature for their optimal fertilization capacity
  • D
    Sperms produced in the scrotal sac are bigger

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$A$: Leydig cells synthesize and secrete testicular hormones called androgens.
$R$: Leydig cells are located between the Sertoli cells.

Give scientific reasons: Testis are located in the scrotum outside the abdominal cavity.

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