Question

Whales, humans, lizards, and birds each have forelimbs that are adapted for different functions, including swimming, using tools, walking, and flying. While different in function, these forelimbs share a similar skeletal structure of the humerus, radius, and ulna. How does a comparison of the forelimbs of these organisms provide evidence for evolution?

A. These homologous structures indicate that these four organisms all share a common ancestor.
B. These analogous structures indicate that whales are descended from organisms that lived on land.
C. These analogous structures indicate that these four organisms all experienced convergent evolution.
D. These homologous structures indicate that humans, whales, and birds all evolved from a lineage of lizards.

Answer 1

B

Step-by-step explanation:

I pretty sure it’s B

Answer 2

A. These homologous structures indicate that these four organisms all share a common ancestor.

Step-by-step explanation:

B and D do not apply here and both are too broad.

C is somewhat incorrect, but A can be scientifically proven.