Which of the following is a unique characteri | vedclass

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(A) The presence of a diaphragm is a unique characteristic of mammals. It is a muscular partition that separates the thoracic cavity from the abdomina

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Presence of diaphragm

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(A) The presence of a diaphragm is a unique characteristic of mammals. It is a muscular partition that separates the thoracic cavity from the abdominal cavity and plays a crucial role in respiration. While four-chambered hearts are also found in birds,and rib cages are present in many vertebrates,the diaphragm is exclusive to the class Mammalia.

Which of the following is a unique characteristic of mammals?

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