Marsupials are a very ancestral form of mammal,evolving before placental mammals over 70 million years ago.Today Australian marsupials can be compared to placental mammals on other continents.

-When you compare Australian marsupials to placental mammals today
A)the marsupials are all very primitive,having changed very little during the last 70 million years.
B)the marsupials are very similar to placental mammals in the ways they have adapted to similar ecological niches.
C)the marsupials have evolved much more rapidly than placental mammals and are more highly adapted.
D)the marsupial fossils look remarkably similar to the placental mammals of today.
E)living marsupials are little changed from the earliest marsupial fossil forms.

Question

Marsupials are a very ancestral form of mammal,evolving before placental mammals over 70 million years ago.Today Australian marsupials can be compared to placental mammals on other continents.
 
-When you compare Australian marsupials to placental mammals today
A)the marsupials are all very primitive,having changed very little during the last 70 million years. 
B)the marsupials are very similar to placental mammals in the ways they have adapted to similar ecological niches. 
C)the marsupials have evolved much more rapidly than placental mammals and are more highly adapted. 
D)the marsupial fossils look remarkably similar to the placental mammals of today. 
E)living marsupials are little changed from the earliest marsupial fossil forms.

Quizplus · Accepted Answer

Australian marsupials have evolved to adapt to similar niches as the placental mammals on other continents, indicating they are not primitive but rather have undergone parallel evolution to achieve similar adaptations.

Marsupials Are a Very Ancestral Form of Mammal,evolving Before Placental