In a cockroach,from where do the hepatic caecae arise?

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?

In which part of the alimentary canal of a cockroach are the cuticular invaginations found?

The given figure shows the open circulatory system of a cockroach. Identify the structure that facilitates the flow of haemolymph by its contraction and relaxation.

In cockroaches,$O_2$ is transported to the tissues by which of the following?

Cockroach blood does not contain respiratory pigment. It means: