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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

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
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5 votes
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

asked
User Evansgambit
by
7.4k points

2 Answers

7 votes

Answer:

B

Step-by-step explanation:

They have no bones, and therefore, they are classified as a invertebrate(s).

answered
User Carlos C Soto
by
8.7k points
9 votes

Answer:

B

Step-by-step explanation:

because they belong to classe Echinoidea, phylum echonodermata

answered
User Danise
by
9.0k points
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