In the male cockroach,in which part of the reproductive system are the sperms stored?

Refer to the given figure of the female reproductive system of a cockroach and identify the correct labels (marked as $1, 2, 3$ and $4$) which are collectively called the genital pouch.

Which is the correct sequence of labeling for the given figure?

The alary muscles are associated with which of the following?

Identify the location and function of the following structures in a cockroach:
$(i)$ Gizzard
$(ii)$ Hepatic caecum

In cockroach,the development is paurometabolous,meaning that development occurs through the nymphal stage. The nymph grows by moulting about $13$ times to reach the adult form. The metamorphosis process in cockroach requires approximately how many days?