Why should scientists consider both the adult body plan of an animal and its pattern of embryological development when classifying an animal? use an example to support your explanation.

Because it is very rare for animals belonging to different phyla to have the same body plans as adults, which makes this characteristic extremely important for classifying living beings.

Explanation:

When classifying living beings, it is very important that scientists evaluate the embryological development pattern and body tissues. The embryological development pattern, however, can present itself in the same or very similar way in living beings that belong to phyla or to a different taxon. For this reason, the embryological development pattern alone is not enough for the classification to be efficient and correct.

On the other hand, it is very rare that adult living beings from different phyla have the same body plan. For this reason, it is favorable for scientists to use the body plan and the embryological development pattern when it is necessary to classify living beings.

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation: