Which of the following statements is incorrect regarding epithelial tissue?

Frogs are __

Which of the following animals is an invertebrate?

Which of the following functions is not performed by epithelial tissue?

Pancreatic juice is delivered to the duodenum by the ___

Which of the following does not pass through cloaca?

Which of the following tissue sections has been represented in the given diagram?

Where does the urinogenital duct open in the case of frogs?