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Why are these groups with diverse lifestyles (some with shells and some without,some colonial and some solitary,etc. )considered together? Be sure to list the structures and behaviors they have in common and discuss their evolutionary relationships.
Q4: Hemichordates show relationships to<br>A)arrow-worms.<br>B)arthropods and annelids.<br>C)molluscs and
Q6: A slice through the head that shows
Q6: In the male reproductive system,the Sertoli (sustentacular)cells<br>A)produce
Q26: Medial and lateral processes on a crustacean
Q32: The polypoid stage of scyphozoans is called
Q41: During the process of "arthropodization," the role
Q51: Many polychaetes are euryhaline meaning that they<br>A)can
Q59: To what extent are the cells of
Q82: The common name for chaetognaths is<br>A)arrow worms.<br>B)acorn
Q82: Which is NOT part of the mammalian