Question : Aves are warm-blooded animals and have a ______ heart.
Option 1: four-chambered
Option 2: two-chambered
Option 3: five-chambered
Option 4: three-chambered
Correct Answer: four-chambered
Solution : The correct answer is four-chambered .
The animal kingdom's phylum Chordata is home to the Aves. It has nine thousand species or such. Aves are flight-adapted. Every bird arrives in the Aves class. They have a four-chambered heart filled with warm blood, a feathered body, lungs that are used for respiration and forelimbs that have been transformed into wings.
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