Question

Which of the following organisms belongs to Phylum echinoderm?

• A. Starfish
• B. Earthworm
• C. Sponges
• D. Butterfly

Answer 1

The correct option is A

Starfish

The correct option is A:

Explanation of the correct option :

1. Starfish belong to the phylum Echinodermata.
2. They have spiny skin. The head is absent and five radially arranged arms are present.
3. In this phylum, the water vascular system and tube feet are present.
4. The presence of tube feet is a characteristic feature of Echinoderms.
5. The tube feet help in the intake of food. Excretory organs are not present.

Final answer: Starfish belongs to Phylum echinoderm.