Question

Similarly, there are a number characteristics that vary between marsupials and placentals. However, there is one characteristic that links both. What is it?

a. they both have milk glands for thermoregulation

b. they both have completely developed young at birth

c. they have an equal distribution on all of the contents

d. they both have a stiff torso that limits hind limb movement during running

e. they both have a placenta to nourish their young

Answer 1

e. they both have a placenta to nourish their young.

Step-by-step explanation:

• Marsupials are the mammals that raise their child in a pouch that is present externally to their body.
• Placentals undergo embryo development inside the body in the mother's uterus.

Simalirity-

• Placentals have a placenta inside the body in the uterus to which the baby is attached and receives the nourishment.
• Marsupials also have a rudimentary placenta. It is more of a kind of a yolk sac placenta that provides nutrients to the embryo.