The vast majority of bilateral animals have a fluid-filled body cavity, or coelom. Which of the following is an exception?
A) Horses
B) Sparrows
C) Spiders
D) Flatworms
E) Frogs

Name: The vast majority of bilateral animals have a fluid-filled body cavity, or coelom. Which of the following is an exception? A) Horses B) Sparrows C) Spiders D) Flatworms E) Frogs
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Question

Quizplus · Accepted Answer

Flatworms are an exception because they are acoelomates, meaning they lack a fluid-filled body cavity (coelom).

The Vast Majority of Bilateral Animals Have a Fluid-Filled Body