Q.

Locomotory organ of a starfish is -

A. Tube feet
B. Paddle
C. Muscular foot
D. Flipper
Answer» A. Tube feet
Explanation: Starfish carry out movements with the help of tube feet that are part of the water vascular system. Apart from their function in locomotion, the tube feet act as accessory gills. The water vascular system serves to transport oxygen from, and carbon dioxide to, the tube feet and also nutrients from the gut to the muscles involved in locomotion.
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