The most successful phylum with regards to diversity and numbers is
What are the three major body regions of many arthropods?
A) head, thorax, and abdomen
B) head, abdomen, and legs
C) head, thorax, and legs
D) head, gastrovascular cavity, and thorax
E) head, gills, and legs
Sea cucumbers and sea urchins belong to the phylum
If asked on an exam to give a property not found in the echinoderms,which would you write on the exam?
A) They exhibit cephalization.
B) Adults exhibit radial symmetry.
C) Larvae exhibit bilateral symmetry.
D) They have a complete digestive tract.
E) They have spiny skin.