The cnidarians have an incomplete gut (having only one opening) called the:
A) nematocyst.
B) coelom.
C) gastrovascular cavity.
D) pseudointestine.
E) spongeocoel.

Question

Quizplus · Accepted Answer

Cnidarians have an incomplete digestive system, which means they have only one opening for both taking in food and expelling waste. This opening is called the gastrovascular cavity. The nematocyst is a specialized stinging cell found in cnidarians, while coelom refers to the body cavity that many animals have. Pseudointestine is not a term commonly used in biology, and spongeocoel refers specifically to the unique body structure found in sponges.

The Cnidarians Have an Incomplete Gut (Having Only One Opening)