$6-8$ blind tubules are present at the junction of Foregut and Midgut are:

In cockroach,identify the parts of the foregut in correct sequence.

The body cells in cockroach discharge their nitrogenous waste in the haemolymph mainly in the form of

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

Which of the following statement$(s)$ is/are correct about the nervous system of a cockroach?
$(i)$ It consists of a series of fused segmentally arranged ganglia joined by paired longitudinal connectives on the ventral side.
$(ii)$ There are six ganglia lie in the thorax,and three in the abdomen.
$(iii)$ The sense organs are antennae,eyes,maxillary palps,labial palps,and anal cerci,etc.
$(iv)$ Each eye consists of about $5000$ hexagonal ommatidia.

Which of the following is not a part of the male cockroach reproductive system?