Which of these is not true about hepatic caeca in cockroach?

Which of these is not a division of hindgut in cockroach?

The nuclei of columnar epithelial cells are located at the base.

Which body system is the proventriculus of cockroach a part of?

What is meant by a tissue?

What is the main function of compound epithelium?

Which of these characteristics of frog is the reason for its short alimentary canal?

How many chambers are present in a frog’s heart?