Multiple Choice
Annelids have a __________ circulatory system.
A) bloodless
B) closed
C) lacunar
D) open
E) countercurrent
Correct Answer:

Verified
Correct Answer:
Verified
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
Q17: Recent evidence suggests that annelids share common
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
Q23: Which of the following groups of worms