Question

write any 4 distinguishing characteristics of =(Phylum Echinodermata)​

Answer 1

Answer:

General characteristics of Phylum Echinodermata

Symmetry: Adults are radially symmetrical while the larvae are bilaterally symmetrical. The shape of the body is flat, star like, spherical or elongated. Nervous system: absent, they are brainless organism. Blood has no pigment.

Answer 2

Answer:

1. Marine organisms with. skeleton made up of calcareous spines. Calcareous material on the body hence the name is Echinodermata. Some are sedentary while some are free swimming.
2. Body is triploblastic, eucoelomate and radially symmetrical when adult. The larvae are bilateral symmetrical.
3. Locomotion with the help of tube-feet which are also used for capturing the prey.
4. Echinoderms have regeneration capability. Hence they can restore their lost parts.
5. Examples: Starfish, sea-urchin, brittle star, sea-cucumber, etc.