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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asked Nov 13, 2023 167k views

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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

Biology
middle-school

Evansgambit asked

by Evansgambit

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2 Answers

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Answer:

Step-by-step explanation:

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

Carlos C Soto answered Nov 14, 2023

by Carlos C Soto

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9 votes

Answer:

Step-by-step explanation:

because they belong to classe Echinoidea, phylum echonodermata

Danise answered Nov 17, 2023

by Danise

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