An animal digestive tract that consists of two openings (a mouth and anus) is called an
A) excretory system.
B) alimentary canal.
C) intestine.
D) avian (bird) crop.

Question

Quizplus · Accepted Answer

An alimentary canal is a digestive tract consisting of two openings - a mouth and an anus - which is present in animals. Option A is wrong because excretory system includes organs that excrete waste products from the body. Option C is wrong because intestine is just a part of the digestive tract. Option D is wrong because the avian crop is a specialized part of the digestive system of birds and not a general term to describe the digestive tract.

An Animal Digestive Tract That Consists of Two Openings (A