1.

(b) E(d) 피UeftTwo chambered heart is found in :(a) Mammal(c) Amphibian(b) Reptile(d) Fish

Answer»

Answer : d) FishExplanation :Vertebrate hearts can be categorized by the number of chambers they have:Twochambers: one atrium and one ventricle (fish)Threechambers:twoatria and one ventricle (amphibian and reptile)Fourchambers:twoatria andtwoventricles (bird and mammal)



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