The male sex cells also called gametes are produced in the testes by a process called

Analyze the question The question asks for the process by which male gametes (sperm cells) are produced in the testes. Note the key word: "process."

Explain the concept

• Gametogenesis is the general term for the formation of gametes of either sex (sperm in males, ova in females).
• Spermatogenesis is the specific process of producing sperm cells in the seminiferous tubules of the testes.
• Oogenesis is the specific process of producing ova in the ovaries.
• Implantation is the attachment of the embryo (blastocyst) to the uterine wall.
• Spermatozoa are the sperm cells themselves, which are the product and not the process.

Step-by-step solution

1. The question asks for a process, so we can rule out D (spermatozoa), which is the cell and not a process.
2. Implantation (B) happens in the uterus after fertilisation, so it has nothing to do with the testes.
3. Gametogenesis (A) is a general term that covers both sexes. It is not wrong in a broad sense, but the question specifically says "male sex cells" produced "in the testes", which points to the more specific term.
4. Spermatogenesis (C) is the exact process of making male gametes in the testes.

Answer: C. Spermatogenesis

Exam tip Look at the word root: sperm + genesis (origin or formation) = formation of sperm. In the same way, oo (egg) + genesis = oogenesis. When an option is specific to the sex or organ mentioned in the question, it is usually better than the general term.