Question Detail
Question
In the phylogenetic tree of animals, which two groups are both classified under Bilateria?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The tree diagram shows that Lophotrochozoa and Ecdysozoa are both major clades within the Bilateria. Radiata and Parazoa are distinct from Bilateria.
Hint
These two groups fall under the 'Protostomia' branch within Bilateria.