The salivary duct of a cockroach opens at:

In female cockroach,the $7^{th}$,$8^{th}$,and $9^{th}$ sterna form a genital pouch. Which of the following pairs of sterna are primarily involved in forming the brood or genital pouch?

Ecdysone is produced by

Match the following columns regarding the reproductive system of a cockroach:

Column-$I$	Column-$II$
$P$. Testes	$I$. $2$nd to $6$th segments
$Q$. Mushroom gland	$II$. $6$th to $7$th segments
$R$. Ovaries	$III$. $6$th segment
$S$. Seminal vesicles	$IV$. $4$th to $6$th segments

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

What is the similarity between the trachea of a cockroach and a rabbit?