Question

Write four distinguishing characters of phylum- Echinodermata.

Answer 1

  Characteristic features of Echinodermata are:

• they are called echinoderms because calcareous spines are present on the body of these animals.

• their skeleton is made up of calcareous spines/ossicles (plates).

• they show radial symmetry in adult stage whereas they show bilateral symmetry in larval stage.

• these animals have the ability of regeneration.

• they are found only in oceans.