Multiple choice

Which among the following statements is applied to sexual reproduction in human beings?

  1. A mature sperm is consisted of 2 complete sets of chromosomes.

  2. At the time of parturition, an ovary contains all the oocytes it will ever have.

  3. Both primary and secondary spermatocytes divide by mitosis to form spermatids.

  4. The ova are also known as female zygotes.
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B Correct answer
Explanation

During spermatogenesis, the number of chromosomes is halved by meiosis. The primary spermatocytes undergo two meiotic divisions to give rise to spermatids. As a result, mature sperms are haploid. This is also true of a mature ovum, which undergoes meiosis prior to ovulation. A zygote is a fertilized egg.

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