(a) Identify figures A and B.
(b) Which is called tesselated and pavement epithelium ?
(c) Which one lines the gastrointestinal tract and epiglottis ?

Explanation

(a) Figure A is squamous epithelium,
Figure B is columnar epithelium.
(b) Tesslated epithelium is another name for the squamous epithelium . Pavement epithelium is also one of the name of squamous epithelium.
(c) Gastrointestinal tract is lined by simple columnar epithelium. Epiglottis is lined by simple columnar epithelium.
(d) Simple epithelium such as squamous epithelium allows diffusion of substance through if.