Question Detail
Question
The evolution of bilateral symmetry is closely associated with which phenomenon?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Bilateral symmetry allowed for the formation of head and tail ends, leading to cephalization—the collection of a nervous system at the anterior end. Radial symmetry does not support cephalization.
Hint
It refers to the organization of a 'head' at the anterior end.