Which layer of the alimentary canal is constructed from either stratified squamous or simple columnar epithelium?

Mucosa

Explanation:

The gastrointestinal tract or alimentary canal consists of four main layers:

•Mucosa- consists of the epithelium (it can be stratified squamous or simple columnar epithelium) together with glandular tissue and the lamina propria  (connective tissue)

•Submuscosa- consists of fibrous connective tissue with larger blood vessels, lymphatics, nerves..

•Muscularis externa-smooth muscle layer that consists of three layers, responsible for movement (propulsion) and physical break down of the food

•Serosa-consists of connective tissue continuous with the peritoneum.

the answer is sex-linked recessive.