The lophophore of ectoprocts is extended
A) by a hydraulic mechanism.
B) when the polypide is withdrawn into the zoecium.
C) into the cystid.
D) all of these
Correct Answer:
Verified
Q12: The lophophore contains within it an extension
Q13: Ribbon worms have a complete digestive tract.
Multiple
Q14: The valves of brachiopods are
A)secreted by the
Q15: Because of the shape of their shells,the
Q17: Some modern brachiopods have existed virtually unchanged
Q18: Brachiopoda
A)are called bryozoans.
B)have a mantle and two
Q19: A proposed new phylum,_ includes animals found
Q20: Tiny,sessile pseudocoelomate animals that superficially resemble hydroid
Q30: Resistant capsules containing germinative cells formed by
Q55: Ribbon worms seize their prey with their
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