The unit of photoreception, in a compound eye of cockroach and other insects, is

Which of the following characteristics is incorrect with respect to cockroach?

The terga, sterna and pleura of cockroach body are joined by

It is part of male cockroach

Mark the odd one in each series:

Maxilla; mandible; labrum; antennae

Mention structure of heart and path of transport in cockroach.