In the given diagram of a cockroach,which part represents the prothorax?

Give scientific reasons: Cockroaches are harmful to human life.

Which of the following statement$(s)$ is/are correct?
$(i)$ Cockroaches are brown or black bodied animals that are included in class $Insecta$ of phylum $Arthropoda$.
$(ii)$ Males bear a pair of short,thread-like anal styles which are absent in females.
$(iii)$ The heart of a cockroach consists of an elongated muscular tube lying along the mid-dorsal line of the thorax and abdomen.
$(iv)$ The nymph grows by moulting about $13$ times to reach the adult form.

The head of a cockroach is formed by the fusion of ...... segments.

An animal that possesses compound eyes is ........

Complete metamorphosis is found in