Question

Which of the following organisms has tube feet as its locomotory organs?
(a)Starfish
(b)Jellyfish
(c)Cuttlefish
(d)Silverfish

Answer 1

Hint: Locomotory organs are the organs which can move or are motile. In fishes, the fins and wings are the anatomical structures that are locomotory organs in them. They are used in body movement and help them to push through the water.

Complete answer:
Starfish contains tube feet as its locomotory organ. They perform locomotion by contracting muscles and the force generated by water into the tube feet by which they can extend and push themselves against the ground. After this, the feet are relaxed and allow them to retract. They contain no brain or blood and can digest food outside their body. They are known as echinoderms and asteroids. In the world's ocean, there are 1500 species of starfish from the tropics to polar water. The tube feet are operated by the hydraulic system. They can regenerate their damage to parts and can shed arms as a means of defense. The ossicles and spine of starfish are preserved. The Ghat of starfish is extended to the arms and are most of the discs.

Additional Information: Jellyfish: Jellyfishes of the sea jellies are gelatinous members of phylum cnidaria. They are free-swimming Marine animals which consist of umbrella-shaped bells and trailing tentacles. They are found all over the world in the deep sea and some of them live in freshwater such as hydrozoans. They are colorful and are common in coastal zones. Some of them are eaten by humans in certain cultures and are salted to remove excess water.
Cuttlefish: Cuttle fishes are the marine molluscs of Cephalopods. They consist of a unique internal shell and the cuttlebone which is used for control of buoyancy. They have large W-shaped pupils, two tentacles, and eight arms by which they can secure their prey. They eat small crabs, fishes, octopuses, molluscs and their predators include dolphins, sharks, or other cuttlefishes.
Silverfish: They are derived from animals' silvery light grey color that is small, wingless insects and combined with the fish-like appearance of its movement. Its diet consists of carbohydrates such as sugars or starches. They carry out a ritual that involves three phases that last for over half an hour before reproduction.
So, the correct answer is 'starfish'.

Note: Fish reproduce by laying eggs whereas some great dishes such as white sharks give birth to babies which are known as pups. Lungfish can live without water for many years and secretes a mucus cocoon and Bros itself under the unbaked earth. Starfish and jellyfish are not considered as fishes.