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NEET UG Human Reproduction — practice questions — page 4

Explore 103 free Human Reproduction questions in NEET UG Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Human Reproduction questions and exercises with answers

Showing questions 91–103 of 103.

In the testis, FSH acts on which cells to aid spermiogenesis?Read the answer and worked solution →About how many sperms does a human male release in one ejaculation?Read the answer and worked solution →For normal fertility, at least what share of sperms must have normal shape and size?Read the answer and worked solution →How many chromosomes does each human secondary spermatocyte carry?Read the answer and worked solution →When are oogonia formed in the human female?Read the answer and worked solution →A primary follicle becomes secondary when it gains more granulosa layers and a:Read the answer and worked solution →At around what age do menstrual cycles stop in women?Read the answer and worked solution →After implantation, chorionic villi develop as projections of the:Read the answer and worked solution →By the end of 12 weeks of pregnancy, which foetal features are well developed?Read the answer and worked solution →The first movements of a human foetus are usually noticed during the:Read the answer and worked solution →Eyelashes form and the eyelids separate in a foetus by the end of about:Read the answer and worked solution →The germ layer that appears between ectoderm and endoderm is the:Read the answer and worked solution →Which cells of the inner cell mass can give rise to all tissues and organs?Read the answer and worked solution →

Worked practice questions

In the testis, FSH acts on which cells to aid spermiogenesis?

  1. Spermatocytes
  2. Sertoli cells
  3. Leydig cells
  4. Spermatids
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Correct answer: B. Sertoli cells

FSH stimulates Sertoli cells to secrete factors that help convert spermatids into sperms.

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About how many sperms does a human male release in one ejaculation?

  1. 20 to 30 million
  2. 2 to 3 billion
  3. 2 to 3 million
  4. 200 to 300 million
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Correct answer: D. 200 to 300 million

A single ejaculation during coitus carries roughly 200 to 300 million sperms.

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For normal fertility, at least what share of sperms must have normal shape and size?

  1. 60 per cent
  2. 25 per cent
  3. 80 per cent
  4. 40 per cent
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Correct answer: A. 60 per cent

At least 60 per cent of sperms should be normal in shape and size, while a separate 40 per cent rule applies to vigorous motility.

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More Biology topics

Genetics and EvolutionReproduction in Organisms & PlantsBiotechnology and ApplicationsBiodiversity and ConservationThe Living World & Biological ClassificationNeural Control and Chemical CoordinationPrinciples of Inheritance and VariationAnimal Kingdom