Multiple Choice
As the arthropod ancestors underwent "arthropodization,"
A) their circulatory system became closed.
B) their hemocoel took on a new function as a hydrostatic skeleton.
C) there was an expansion of surfaces for respiration and excretion.
D) the cuticle was hardened to form a stiffened exoskeleton.
Correct Answer:
Verified
Correct Answer:
Verified
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