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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

Previous Year Papers

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Class 10 Class 12

The first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy?

  • Fourth month

  • Fifth month

  • Sixth month

  • Third month


B.

Fifth month

During development of the foetus in human by week 20, hair begins to grow including eyebrows and eyelashes, fingerprints develop. Fingernails and toe nails grow. Firm hand grip Between 16 and 20 weeks baby usually felt moving the for first time.

During development of the foetus in human by week 20, hair begins to grow including eyebrows and eyelashes, fingerprints develop. Fingernails and toe nails grow. Firm hand grip Between 16 and 20 weeks baby usually felt moving the for first time.

800 Views . 11 Shares

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

B.

Tapeworm
976 Views . 4 Shares

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

C.

spermiogenesis
1502 Views . 4 Shares

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

D.

44 + XY
987 Views . 12 Shares

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

A.

1 ovum
1111 Views . 5 Shares

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 . 8 Shares

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