Eutherians are Mammals with a _____

Question

Eutherians are mammals with a _____.
A)pouch
B)placenta
C)dewclaw
D)urethral cone

Accepted Answer

Eutherians have a placenta, which is a specialized organ that allows for nutrient and gas exchange between the mother and the developing fetus. This is a distinguishing feature of eutherian mammals, as opposed to marsupials (which have a pouch) or monotremes (which lay eggs). Dewclaws are additional digits on the feet of some mammals, and urethral cones are found in male felids but are not a defining characteristic of eutherians.