Multiple Choice
All arthropods share
A) A calcified internal skeleton
B) A calcified external skeleton
C) An external skeleton composed of chitin
D) A strictly marine habitat
Correct Answer:

Verified
Correct Answer:
Verified
Q2: Sponges feed by means of<br>A) Currents formed
Q3: All sponges<br>A) Reproduce exclusively asexually<br>B) Have sexual
Q4: Benthic sea squirts are most closely related
Q5: Annelids differ from nematodes in<br>A) Having a
Q6: Members of the Polychaeta<br>A) Have parapodia<br>B) Lack
Q8: The radula<br>A) Is found in gastropods and
Q9: Trilobites belong to<br>A) The Crustacea<br>B) The Mollusca<br>C)
Q10: Flatworms have<br>A) Many representatives that are parasitic<br>B)
Q11: Echinoderms differ from mollusks in their<br>A) Dominant
Q12: What is the advantage of bilateral symmetry