Question 4
How does the supply of ova differ from the supply of sperm?
The right answer is the one marked above.
All the ova are present at birth and are only released; sperm are made continuously from puberty. At birth one ovary holds about 200,000 to 400,000 primary follicles, and no more are ever made.
Ova made continuously and sperm all present at birth has the two exactly the wrong way round. The production of ova begins at the foetal stage — so the number a person will ever have was settled before they were born.