which of these is really fish(star fish/silver fish/jelly fish)
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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
prerakvashisth:
thanks so much
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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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