Question

The number of basic layers of inner wall of the alimentary canal is

• A. One
• B. Two
• C. Three
• D. Four

Answer 1

The correct option is D Four

The alimentary canal has four different layers. From innermost to outmost, the order goes mucosa, submucosa, muscularis, and serosa- innermost produces mucous which helps food move along and protects more delicate tissues from being digested.

So, the correct answer is 'Four'.