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In the male testes, which cells secrete testosterone that initiates the process of spermatogenesis?
ASertoli cells
BLeydig cells
CGranulosa cells
DChromaffin cells
Answer & Solution
Correct answer: B. Leydig cells
1. The testes contain seminiferous tubules, Sertoli cells and Leydig cells.
2. Sertoli cells support and nourish the developing sperms.
3. Leydig (interstitial) cells secrete testosterone, which initiates spermatogenesis.
4. Granulosa cells are in the ovary and chromaffin cells in the adrenal medulla, so those are ruled out.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 17 Reproduction in Plants and Animals "Structure of Testes", p.256_
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