In cockroach,the ootheca is produced by the secretion of:

Which of the following parts is not associated with the nerve ring in a cockroach?

Consider the following statements regarding cockroach and mark the correct option.
$(i)$ Head is formed by the fusion of $6$ segments.
$(ii)$ Mouth parts are biting and chewing type.
$(iii)$ Crop is the part of midgut.

The heart of a cockroach is ...... .

Match column-$I$ with column-$II$ and choose the correct option.

Column $I$	Column $II$
$A$. Periplaneta americana	$I$. Hepatic caecae
$B$. $A$ ring of $6-8$ blind tubules	$II$. Phylum Arthropoda
$C$. Vascular system	$III$. Spiracles
$D$. $10$ pairs of small holes	$IV$. Malpighian tubules
$E$. Excretion	$V$. Open type

Gizzard (proventriculus) in cockroach lies between