Physiology Endocrinology and Reproduction 286b5495 Time for formation of mature sperm- A 30-35 days B 40-45 days C 50-55 day D 70-75 days High-Yield Explanation Ans. is 'd' i.e., 70-75 days * In humans, it takes an average of 74 days to form a mature sperm from primitive germ cells.