The submucosa layer is thickest in which part of the alimentary canal?

Brunner's glands occur in

Peyer's patches are associated with the intestine and vermiform appendix in mammals. These are

Select the correct sequence for the human digestive tract.

Goblet cells of the alimentary canal are modified from:

Given below are two statements.
Statement $I$: Since human beings have different kinds of teeth fitted in two jaws,the dentition is described as diphyodont.
Statement $II$: Human beings have four different kinds of teeth,hence it is described as heterodont.