Microvilli is present in the epithelium of ___

Which of these structures is present in male cockroaches only?

Which of these structures act as the tongue of the cockroach?

Which of the following structures does the given figure represent?

Which of the following cellular junctions create a cytoplasmic connection between adjoining cells?

In which abdominal segment are the anal cerci present in cockroach?

Frogs are ___

Which of these is not a secondary lymphoid organ?