The head of a mammalian sperm is...

The structure formed after the release of ova from Graafian follicles and which is secretory in nature,is:

Define spermiogenesis and spermiation.

In which of the following organisms is a microlecithal egg (egg with a very small amount of stored food) found?

In human females,at the time of birth,there are approximately $2$ million primary oocytes. How many of them normally reach maturity during the entire reproductive life of a female?

What are the functions of the Luteinizing Hormone $(LH)$?