How many eggs are released by a human ovary in a month? How many eggs do you think would have been released if the mother gave birth to identical twins? Would your answer change if the twins born were fraternal?

Match Column-$I$ with Column-$II$:

Column-$I$	Column-$II$
$(A)$ Mons pubis	$(1)$ Embryo formation
$(B)$ Antrum	$(2)$ Sperm
$(C)$ Trophectoderm	$(3)$ Female external genitalia
$(D)$ Nebenkern	$(4)$ Graafian follicle

Release of spermatozoa from the urethra by male animals is called:

What is the type of egg found in birds?

Consider the following four statements $(A-D)$ and select the option which includes all the correct ones only.
$(A)$ The male sex accessory ducts include rete testis,vasa efferentia,epididymis and vas deferens.
$(B)$ Leydig cells synthesise and secrete testicular hormones called androgens.
$(C)$ The female reproductive system is located in the pelvic region.
$(D)$ Each testis has about $250$ compartments called testicular lobules.

In which of the following is holoblastic cleavage observed?