The following statements compares the process of oogenesis and spermatogenesis. Which one is not true?
(a) Production of ovum ceases at certain age, but sperm production continues even in old men.
(b) Oogenesis begins in the embryonic stages, but spermatogenesis starts at the onset of puberty.
(c) Meiotic arrest occurs both in Oogenesis and spermatogenesis.
(d) Polar bodies are formed in oogenesis.
