1.

Identify two features possessed by all Chordates.In which class would you place any organism which hasa scaly exoskeleton and a bony endoskeletona scaly exoskeleton and lay eggs outside water.

Answer»
  1. Presence of notochord/ dorsal nerve chord/ paired gill pouches/ have a bilaterally symmetrical body/ are triploblastic/ are coelomate.
    1. Class pisces
    2. Class Reptilia


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