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The amniotes are characterised by the presence of a) four legs b) amphibious life c) egg membranes d) metamorphosis

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The amniotic egg is the key characteristic of amniotes. In amniotes that lay eggs, the shell of the egg provides protection for the developing embryo while being permeable enough to allow for the exchange of carbon dioxide and oxygen. Hence, the correct option would be option (c). 

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Ritika Jonwal

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