Which of the following is a placental mammal not marsupial?

Which of the following is not a placental hormone ?

Eggs of placental mammals are

Eggs of placental mammals are

Which one of the following is not a placental hormone?

Which of the following is not a trait of marsupials ?

In which of the following placentation is axile?

What kind of evolution has brought similarity in the following examples : (i)Placental cat and a marsupial cat (ii)Fishes and whales (iii)Darwin's finches