A chambered heart and a dorsal notochord are present in

Cardinal

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Sea urchin

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Snail

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Praying mantis

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Solution

The correct option is A Cardinal
Out of the given options, Cardinal is a vertebrate. It is a bird that possesses a four-chambered heart. Being a vertebrate, it also possesses a notochord at some stage of its life.

Sea urchin does not possess a chambered heart or a notochord. Neither does snail or praying mantis.
So, the correct answer is 'Cardinal'.

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Name the phylum in which dorsal nerve tube, notochord and pharyngeal gill clefts are present.

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