Recent Evidence Suggests That Annelids Share Common Ancestry with

Q12: The body part surrounding the mouth and

Q13: Echiura,Pognophora,and Sipuncula are all older phylum names.These

Q14: Clitellate reproduction may be characterized by<br>A)the female

Q15: Leeches belong to the annelid clade<br>A)Oligochaeta.<br>B)Chaetognatha.<br>C)Hirudinea.<br>D)Gnathobdellida.<br>E)Errantia.

Q16: Recent molecular studies suggest that members of

Q18: Annelids have a _ circulatory system.<br>A)bloodless<br>B)closed<br>C)lacunar<br>D)open<br>E)countercurrent

Q19: _ are sensory pits on the heads

Q20: Unlike other annelids,echiurans<br>A)have an open circulatory system.<br>B)do

Q21: In the clade Clitellata,the larval form is<br>A)a

Q22: In most annelids each body compartment has