NEET 2013 Biology question

What is the correct sequence of sperm formation ?

(1)Spermatid, spermatocyte, spermatogonia, spermatozoa
(2)Spermatogonia, spermatocyte, spermatozoa, spermatid
(3)Spermatogonia, spermatozoa, spermatocyte, spermatid
(4)Spermatogonia, spermatocyte, spermatid, spermatozoaCorrect

Answer: (4)

Solution

In the seminiferous tubules, spermatogonia (2n, multiplication phase) grow into primary spermatocytes (2n); these undergo meiosis I to form secondary spermatocytes (n), and meiosis II to form spermatids (n). Spermatids are

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Question ID VK-091453