Select the CORRECT statements regarding periplaneta americana.
I. A ring of 6-8 blind tubules called hepatic or gastric caeca is present at the junction of foregut and midgut.
II. The lower lip is called labium and the upper lip is called the labrum.
III. Tegmina are mesothoracic wings that are opaque, leathery, and dark.
IV. It has a vision known as a mosaic vision with more resolution but less sensitivity.

Answer

Digestive juices