Ecdysis, a feature common to the ecdysozoans, is
A) secretion of an exoskeleton.
B) molting of a cuticle.
C) elimination of metabolic wastes.
D) gas exchange through the body wall.
E) mating by hermaphroditic organisms.
Correct Answer:
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Q134: Spiral cleavage in early development
A) occurs in
Q135: Bryozoans, annelids, and mollusks are grouped as
Q136: Which two features are characteristic of lophotrochozoans?
A)
Q137: Refer to the figure. Q138: The mollusks are a very diverse group Q140: Which statement about ecdysozoan exoskeletons is false? Q141: The combination of a true coelom, repeating Q142: Which of the following are not lophotrochozoans? Q143: The firm exoskeleton of insects has protective Q144: Refer to the figure. 
A)
A)
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