A cladogram is shown below.

a) Why is the amoeba considered an outgroup in this cladogram?








b) What trait does a salmon have that an earthworm does not?







c) What does this cladogram tell you about the evolutionary relationship of the traits of jaws and limbs?






d) A squirrel glider is an organism with jaws, limbs, and hair. It does not use a placenta for reproduction. Where do you think this organism would belong in the cladogram?