Question

(a) How is 'oogenesis' markedly different from 'spermatogenesis' with respect to the growth till puberty in the humans?
(b) Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.

Answer 1

a) The difference between spermatogenesis and oogenesis with respect to the growth till puberty is given below:

Spermatogenesis	Oogenesis
It takes place in males throughout life starting from puberty.	It starts before birth during embryonic development and takes place up to menopause.
A single spermatogonium produces 4 haploid sperms after second meiotic division.	A single oogonium produces one functional ovum after second meiotic division and two non-functional polar bodies.
Spermatogenesis is completed in testes and produces 4 haploid sperms.	The second meiotic division is completed in oviduct after the entry of sperms in secondary oocyte.

b) The figure given above shows the mature human ovary.