The cockroach of genus $Blatta$ is also called:

$A$. Ommatidia	$i$. For vision
$B$. Trochanter	$ii$. Fused with large and stout femur
$C$. Coxa	$iii$. Articulation with thorax
$D$. Sclerites	$iv$. Forming exoskeleton

Match the columns and choose the correct combination.

Which of the following statement$(s)$ is/are correct regarding cockroaches?
$(i)$ The body of the cockroach is segmented and divisible into three distinct regions - head,thorax and abdomen.
$(ii)$ Blood vascular system is of closed type.
$(iii)$ They are monoecious and both sexes have well developed reproductive organs.
$(iv)$ The development of $P. americana$ is paurometabolous,meaning there is development through nymphal stage.

Answer in one word or one line. How many segments are present in the abdomen of a cockroach?

The process of conversion of a small cockroach into an adult cockroach is called as

Male cockroach can be identified from the female by the presence of