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Human Reproduction

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Which part of ovary in mammals acts as an endocrine gland after ovulation?

  • Graaffian follicle

  • Stroma

  • Germinal epithelium

  • Vitelline membrane


A.

Graaffian follicle

During ovulation, the mature follicle or Graafian follicle bursts and the ovum is released. After ovulation, the granulosa cells and the interstitial cells form a mass of large and yellowish conical cells. This is named as Corpus luteum which serves as a temporary endocrine gland by releasing progesterone and estrogen. 

During ovulation, the mature follicle or Graafian follicle bursts and the ovum is released. After ovulation, the granulosa cells and the interstitial cells form a mass of large and yellowish conical cells. This is named as Corpus luteum which serves as a temporary endocrine gland by releasing progesterone and estrogen. 


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

A.

1 ovum

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

C.

spermiogenesis

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

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

B.

Tapeworm

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

D.

44 + XY