What are the functions of placenta?

How spermiogenesis and spermiation differ from each other?###Define spermiogenesis and spermiation.

Describe in brief Embryonic development after implantation.

Draw a labelled diagram of a Graafian follicle?

What is parturition? Which hormones are involved in induction of parturition?

What is menstrual cycle? Which hormones regulate menstrual cycle?

What is placenta? How does it develop?

Write a short note on hormonal regulation of spermatogenesis.###Name the hormones involved in regulation of spermatogenesis.

Give brief detail on male external genitalia.

Write two major functions each of testis and ovary.