Question

Write four distinguishing characters of phylum – Echinodermata. Select the correct answer from above options Science questions and answers, Science questions pdf, Science question bank, Science questions and answers pdf, mcq on Science pdf,Science book pdf,Science pdf notes,Science lecture notes,Science of light,maxwell Science,Science proposed by,electromagnetic theory engineering physics,Science nptel

Answer 1

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 *****. 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.