Question

which of these is really fish(star fish/silver fish/jelly fish)

Answer 1

None of them are really a fish . A starfish is not a fish , it has no gills , fins or scales . Jelly fish is not a fish , it belongs to a group called invertebrates while fishes are vertebrates . Silverfish are not fish , they are insects , but are so called as they resemble a fish and its movement . Hope this helps

Answer 2

Answer:

None of these is real fishes.

Explanation:

• Starfish belong to the phylum Echinodermata
• Silverfish is an insect
• Jellyfish belong to the phylum Cnidaria.
• Echinoderms with a star form that belong to the class Asteroidea are known as starfish or sea stars.
• Marine invertebrates include starfish.
• Although some species have more arms, they typically have a centre disc and five arms.
• The aboral or upper surface is made up of overlapping plates and can be smooth, granular, or spiky.
• A species of tiny, adolescent, wingless insect belonging to the Zygentoma group is called a silverfish.
• The insect's silvery light grey colour and fish-like appearance in its movements are the sources of its common name.
• The informal popular names for the medusa-phase of a few gelatinous organisms of the subphylum Medusozoa, a significant division of the phylum Cnidaria, are jellyfish and sea jellies.

None of the options given is fish.

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