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Question
Which of the following is the smallest taxonomic group of animals having a cranium, vertebral column, ventral heart, pulmonary respiration and two pairs of limbs?
Which of the following is the smallest taxonomic group of animals having a cranium, vertebral column, ventral heart, pulmonary respiration and two pairs of limbs?
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Solution
The correct option is A Tetrapoda
Gnathostomata includes fishes which don't have four limbs. Vertebrata includes Agnatha which doesn't have well-developed cranium or limbs. Protochordates or primitive chordates do not have a well-developed cranium, limbs, vertebral column or ventral heart. Of the given options only tetrapods have all the listed characters.
Gnathostomata includes fishes which don't have four limbs. Vertebrata includes Agnatha which doesn't have well-developed cranium or limbs. Protochordates or primitive chordates do not have a well-developed cranium, limbs, vertebral column or ventral heart. Of the given options only tetrapods have all the listed characters.
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