Write four distinguishing characters of phylum – Echinodermata.

1.	Write four distinguishing characters of phylum – Echinodermata.
Answer» Distinguishing characters of Echinodermata: 1. Marine organisms with skeleton made up of calcareous spines. Calcareous material on the body hence the name is Echiodermata. 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. Most of them are unisexual. 6. Examples; Starfish, sea-urchin, brittle star, sea cucumber, etc.

Answer»

Distinguishing characters of Echinodermata:

1. Marine organisms with skeleton made up of calcareous spines. Calcareous material on the body hence the name is Echiodermata. 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. Most of them are unisexual.

6. Examples; Starfish, sea-urchin, brittle star, sea cucumber, etc.

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