Which one of following is a true fish?
Correct answer: D. Sea fish
- A. Cuttle fish
- B. Silver fish
- C. Jelly fish
- D. Sea fish
Explanation
True fish have a backbone (inner skeletal system of bones), gills they breathe through, & fins & a tail for propulsion. There is no organism labelled Sea fish. However, options A, B, and C can be eliminated since they all refer to False fish. Cuttlefish is a mollusk. Silverfish is an arthropod. C is wrong because A fish must have gills, fins, and vertebra which is all lacking in a jellyfish.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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