Question

Which of the following characteristic feature is unique to Phylum Echinodermata?

• A. They have true coelom
• B. They are triploblastic
• C. They have spiny skin
• D. They are found only in marine condition.

Answer 1

The correct option is C

They have spiny skin

The animals belonging to Phylum Echinodermata have an endoskeleton of calcareous ossicles and hence, they are named as Echinodermata. All the other above mentioned features are also seen in Phylum Echinodermata but they are not unique to the Phylum.