The correct sequence of spermatogenetic stages leading to the formatio...
The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is:
- Spermatogonia
- Spermatocyte
- Spermatid
- Sperms
Explanation:
- Spermatogonia are the undifferentiated cells in the testes.
- Spermatogonia undergo mitosis to form primary spermatocytes.
- Primary spermatocytes undergo meiosis to form secondary spermatocytes which further differentiate into spermatids.
- Spermatids mature into sperm cells through the process of spermiogenesis.
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The correct sequence of spermatogenetic stages leading to the formatio...
Spermatogenesis Overview
Spermatogenesis is the process through which sperm cells are produced in the testes. It involves several stages, each essential for the transformation of spermatogonia into mature spermatozoa.
Stages of Spermatogenesis
The correct sequence of spermatogenetic stages is:
- Spermatogonia: These are the initial germ cells in the testes. They undergo mitosis to produce more spermatogonia or to proceed to the next stage.
- Spermatocytes: After a series of mitotic divisions, some spermatogonia differentiate into primary spermatocytes, which undergo meiosis. This results in the formation of secondary spermatocytes.
- Spermatids: The secondary spermatocytes divide meiotically to produce spermatids. These are haploid cells that will undergo further transformation.
- Sperms (Spermatozoa): Finally, spermatids undergo a process called spermiogenesis, where they develop into mature spermatozoa. This involves the formation of a tail and condensation of the nucleus.
Conclusion
The correct sequence, as stated in option B, is:
- Spermatogonia → Spermatocyte → Spermatid → Sperm
This progression is crucial for producing functional sperm, ensuring genetic diversity and the ability to fertilize an ovum in reproduction. Understanding this sequence is vital for students preparing for exams like NEET, where biological processes are frequently tested.