Organisms with a circulating body fluid that is distinct from the fluid that directly surrounds the body's cells are likely to have
A) an open circulatory system.
B) a closed circulatory system.
C) a gastrovascular cavity.
D) branched tracheae.
E) hemolymph.

Question

Quizplus · Accepted Answer

A closed circulatory system, unlike an open circulatory system, has a circulating body fluid that is distinct from the fluid that directly surrounds the body's cells. Option C is incorrect because a gastrovascular cavity is a simple digestive system found in many animals like jellyfish and flatworms. Option D is incorrect because branched tracheae are a respiratory system found in insects. Option E is incorrect because hemolymph is the fluid that circulates in an open circulatory system.

Organisms with a Circulating Body Fluid That Is Distinct from the Fluid