State the differences between the male gametes and the female gametes with regard to
(a) their size; (b) their structure, (c) their relative numbers.
(a) The sperm (male gamete) is much smaller than the ovum (female gamete).
(b) The ovum is spherical and having more cytoplasm than the sperm, which is elongated with a 'tail'.
(c) Sperms are produced in much greater numbers than the ova.