[Campbell Biology P.756] Which statement accurately describes the circulatory system of arth... | Practice Question

Which statement accurately describes the circulatory system of arthropods as presented in the text?

  • A: Arthropods have a closed circulatory system, similar to many molluscs, where blood remains confined to vessels.
  • B: Hemolymph is propelled by a heart through short arteries and enters a body cavity called the hemocoel.
  • C: The coelom forms the main body cavity in adult arthropods.
  • D: The term "blood" is interchangeable with "hemolymph" in arthropods.

Explanation

The text describes arthropods as having an 'open circulatory system, in which fluid called hemolymph is propelled by a heart through short arteries and then into the hemocoel—the body cavity surrounding the tissues and organs.' It also clarifies that 'The term blood is generally reserved for fluid in a closed circulatory system.'