Question

10.2a quiz: methods for classification
which is a correct interpretation of this cladogram?
a. salmon do not have segmented bodies.
b. lizards were the first organisms on earth to have limbs.
c. earthworms are organisms that have jaws.
d. kangaroos evolved after earthworms.

Explanation:

In a cladogram, organisms that are further along the branches evolved later. Earthworms are closer to the common ancestor and kangaroos are further along the branch, indicating kangaroos evolved after earthworms. Option A is incorrect as salmon are on the branch after segmented - bodies, so they have segmented bodies. Option B is incorrect as lizards are not the first to have limbs. Option C is incorrect as earthworms are before the appearance of jaws on the cladogram, so they do not have jaws.

Answer:

D. Kangaroos evolved after earthworms