Sea urchins are spiny, globular animals that live on the ocean floor. How are sea urchins classified?
A. vertebrates
B. invertebrates
C. mammals
D. arthropods
A. vertebrates
B. invertebrates
C. mammals
D. arthropods
Answer
4
(3 stars)
2
Answer
5
(1 star)
0
KiaraKitsune
1 year ago
5 response - 0 helps
Answer:
B
Explanation:
They have no bones, and therefore, they are classified as a invertebrate(s).
Answer:
B
Explanation:
because they belong to classe Echinoidea, phylum echonodermata