Pick the mammal with a true placenta.

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Question

(D) The correct answer is $D$ (Mongoose).$1$. Mammals are classified into three groups: Prototherians (egg-laying mammals like Platypus),Metatherians

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Mongoose

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(D) The correct answer is $D$ (Mongoose).$1$. Mammals are classified into three groups: Prototherians (egg-laying mammals like Platypus),Metatherians (marsupials like Kangaroo),and Eutherians (placental mammals).$2$. $A$ true placenta is a characteristic feature of Eutherians,which allows for the exchange of nutrients and waste between the mother and the fetus.$3$. Mongoose is a Eutherian mammal and thus possesses a true placenta.$4$. Kangaroo is a marsupial (Metatherian) with a short-lived yolk-sac placenta,and Platypus is a monotreme (Prototherian) that lays eggs.

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