The characteristic of the crayfish which make it a member of the clade ecdysozoans is:
a. its numerous appendages
b. a exoskeleton that must be shed
c. a complete digestive system
d. a open circulatory system
d.an open circulatory system
ANSWER :
The characteristic of the crayfish which makes it a member of the clade ecdysozoans is that its exoskeleton must be shed, because in the members of arthropada phylum or ecdysozoans, the hormone ecdysone secreted from prothoracic glands, which stimulates moulting in them.
The characteristic of the crayfish which make it a member of the clade ecdysozoans is: a....
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