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Human Reproduction

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for

  • escaping any possible compression by the visceral organs

  • providing more space for the growth of epididymis

  • Providing a secondary sexual feature for exhibiting the male sex

  • maintaining the scrotal temperature lower than the internal body temperature


D.

maintaining the scrotal temperature lower than the internal body temperature

The testes in humans are situated outside the abdominal cavity in scrotal sacs. This is because the temperature of scrotal sacs is 25o C less than internal body temperature.

The testes in humans are situated outside the abdominal cavity in scrotal sacs. This is because the temperature of scrotal sacs is 25o C less than internal body temperature.

326 Views

Primary spermatocyte produces 4 spermatozoa, but primary oocyte produces :
  • 1 ovum
  • 2 ova
  • 3 ova
  • 4 ova

A.

1 ovum
1111 Views

Which of the following shows hermaphroditism and self fertilization ?
  • Earthworm
  • Tapeworm
  • Both A & B
  • Rotifers.

B.

Tapeworm
976 Views

The process of differentiation of spermatid into a spermatozoa is known as :
  • spermatogenesis
  • gametogenesis
  • spermiogenesis
  • oogenesis

C.

spermiogenesis
1502 Views

The chromosone in primary spermatocyte are :
  •  22 + X 
  • 22+Y
  • 44 + XX
  • 44 + XY

D.

44 + XY
987 Views

Ovulation takes place :
  • 2 weeks before the start of next menstrual cycle
  • 14th day of 28 days cycle
  • 10 days after the cease of previous monthly cycle
  •  All the above are correct.

B.

14th day of 28 days cycle
1177 Views