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Which one of the following statements about the phylum Brachiopoda is false?


A) Brachiopods are often misidentified as bivalves.
B) Brachiopods were much more diverse in the past.
C) As in bivalves,the valves in brachiopods are lateral (left and right) to the body axis.
D) Most brachiopods are sessile (attached) .
E) The lophophore resides within the brachiopod's shells.

F) B) and E)
G) B) and C)

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Arachnids are generally carnivorous,_____ being the main exception.

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The three phyla,Ectoprocta,Brachiopoda,and Phoronida,have which feature in common?


A) nephridia
B) a lophophore
C) a radula
D) setae
E) a muscular foot

F) A) and B)
G) D) and E)

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The evolution of jointed appendages has made __________ very successful.

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Which one of the following structures is not present in each segment of the earthworm body?


A) circular muscles
B) longitudinal muscles
C) chaetae
D) sperm receptacles
E) nephridia

F) B) and D)
G) All of the above

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Choose the letter of the best match from the following: -Characterized by a circular or U-shaped ridge around the mouth;share features of both protostomes and deuterostomes;three phyla of marine animals.


A) lophophorates
B) gastropods
C) cephalopods
D) annelids
E) leeches

F) A) and C)
G) B) and C)

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