Question

Tube feet are locomotory organs of
A. Cockroach
B. StarFish
C. CuttleFish
D. Catfish

Answer 1

Hint: Different animals have locomotion mechanisms of various kinds. Tube feet are somewhat similar to suction cups that hold hooks to the wall and involve a wet surface to adhere well, as well as a pressure release device.

Complete answer: The locomotor organs of the Echinodermata are tube-feet. This phylum covers species such as starfish. Under hydraulic pressure, tube feet work, just like suction cups. Via a water vascular system, the water is drawn through the arms of the starfish and travels down through the tube legs through a series of tubes. These feet attach and release to the substrate by alternating the water pressure, propelling the animal along, or transferring food to its mouth.
-The joint appendages are the locomotor organs of the cockroach.
-Tube feet are the locomotor organs of starfish.
-Fins are the locomotor organs both in cuttlefish and catfish.
So, B-'Star fish' is the right answer.

Note: Hundreds of tube-feet are placed all along starfish's arms or ambulacral. This action, however, is not synchronized, with each moving independently of each other, so it can be very jerky. The tube feet serve as accessory gills, apart from locomotion. The vascular system of water also aids in the transport of oxygen from the feet and carbon dioxide from the rest of the body to the feet. They also transfer nutrients to the muscles involved in locomotion from the intestine. In most of its discs, the digestive system of the starfish is present and it reaches up to its sides.