A diagram in the course handout shows that a snail shell and internal organs show coiling and one-sided arrangement after development. Identify the related structure or process.

Correct Answer: A

asymmetrical adult body

Many gastropods develop asymmetry due to torsion and shell coiling. This makes their adult body plan different from the more bilaterally arranged ancestral condition. This MCQ belongs to the Gastropoda topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.