A Hemocoel or Blood Cavity Is Found in or Associated

Q81: Oysters are classified in the phylum<br>A) Echinodermata.<br>B)

Q82: The organism shown here is a(n) <img

Q83: The organism in the illustration has <img

Q84: Ecdysozoans<br>A) have a body cavity that forms

Q85: The _are the simplest animals to have

Q87: Flatworms have a coelom that is only

Q88: The only animals that lack tissues are<br>A)

Q89: Which germ layer gives rise to the

Q90: A sea urchin is a member of

Q91: _are characterized by having a pseudocoelom.<br>A) Chordates<br>B)