Which of the following vertebrates have 4 chambered heart but no sinus venosus, they also have metanephric kidneys, Heterocoelous vertebrae and Auditory openings.

Rana, Chameleon, columba

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Crocodylus and Alligator

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Struthio, Aptenodytes and Neophron

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Ornithorhynchus, Pteropus and Delphinus

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Solution

The correct option is B Crocodylus and Alligator
Crocodiles and alligators have 4-chambered heart but no sinus venosus, they also have metanephric kidneys, heterocoelous cervical vertebrae and auditory openings.
So,, the correct answer is 'Crocodylus and Alligator'.

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Which of the following vertebrates have 4 chambered heart but no sinus venosus, they also have metanephric kidneys, Heterocoelous vertebrae and Auditory openings.

The correct option is B Crocodylus and AlligatorCrocodiles and alligators have 4-chambered heart but no sinus venosus, they also have metanephric kidneys, heterocoelous cervical vertebrae and auditory openings.So,, the correct answer is 'Crocodylus and Alligator'.

The correct option is B Crocodylus and Alligator
Crocodiles and alligators have 4-chambered heart but no sinus venosus, they also have metanephric kidneys, heterocoelous cervical vertebrae and auditory openings.
So,, the correct answer is 'Crocodylus and Alligator'.