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(i) Describe the events of spermatogenesis with the help of a schematic diagram.

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Spermatogenesis ensures the production of haploid sperm cells essential for sexual reproduction.
Updated On: Jan 13, 2026
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\begin{figure}[H] \centering \includegraphics[width=0.8\textwidth]{Screenshot 2025-01-16 182535.png} % Replace 'path_to_your_image.png' with the actual file path \caption{Schematic diagram illustrating spermatogenesis.}\label{fig:spermatogenesis} \end{figure} Spermatogenesis, the process of producing haploid sperm from diploid spermatogonia, takes place within the seminiferous tubules of the testes. It comprises three primary stages: \begin{itemize} \item Multiplication Phase: Spermatogonia (diploid stem cells) proliferate via mitosis. A subset of these differentiates into primary spermatocytes. \item Growth Phase: Primary spermatocytes enlarge and prepare for meiosis. \item Maturation Phase: Meiosis I in primary spermatocytes yields two haploid secondary spermatocytes, which then undergo meiosis II to produce four haploid spermatids. \end{itemize} Spermatids transform into mature spermatozoa through spermiogenesis. Sertoli cells offer essential structural and nutritional support throughout this process. In humans, this entire cycle spans approximately 64–74 days. % Quick tip
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