Clam worms and fanworms are members of the class Errantia.
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Q1: Some echiurans are deposit feeders and some
Q3: Errantia have more highly developed sense organs
Q4: Annelids may be characterized as protostomes,with spiral
Q5: Most freshwater leeches are predators,but some are
Q6: Leeches are found predominantly in freshwater habitats,but
Q7: The giant echiurans which live in the
Q8: The Errantia generally have a less well-developed
Q9: The Errantia have separate sexes,but the earthworms
Q10: Except in the leeches,the annelid coelom is
Q11: Earthworms possess paired fleshy appendages called parapodia.
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