What is common among a bat,a whale,and a rat?

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Question

(B) Bats,whales,and rats all belong to the class $Mammalia$. One of the defining characteristics of mammals is the presence of a muscular diaphragm th

Vedclass · Accepted Answer

Muscular diaphragm between thorax and abdomen

Vedclass · Answer

(B) Bats,whales,and rats all belong to the class $Mammalia$. One of the defining characteristics of mammals is the presence of a muscular diaphragm that separates the thoracic cavity from the abdominal cavity. While external pinnae are present in bats and rats,they are absent or highly modified in whales. Testes are located outside the abdominal cavity in many mammals,but this is not a universal feature across all species in the same way the diaphragm is. Therefore,the presence of a muscular diaphragm is a common feature shared by these mammals.

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