Multiple Choice
Which of the following about the lophophore is true?
A) Ecdysozoans possess them.
B) It most likely evolved only once.
C) All animals that possess it are mobile.
D) It is a circular or U-shaped ring of ciliated, hollow tentacles.
E) It is used for gas exchange but not for feeding.
Correct Answer:
Verified
Correct Answer:
Verified
Q9: Caenorhabditis elegans is easy to cultivate, matures
Q10: Phoronids<br>A) float in the plankton. <br>B) secrete
Q11: Some lophotrochozoans have a circular or U-shaped
Q12: The entomologist Terry Erwin estimated that there
Q13: The kinorhynchs and loriciferans are most closely
Q15: Fertilized eggs of most crustacean species<br>A) are
Q16: The ancestral type of wings found among
Q17: Caenorhabditis elegans is a model organism in
Q18: A terrestrial nematode found in upper layers
Q19: The organisms shown in the figure are