Question

which group does the nautilus belong to? *

Explanation:

Nautilus has characteristics like a well - developed head and tentacles, which are typical of cephalopods. Gastropods have a different body plan, usually with a single coiled shell (in many cases) and a different mode of locomotion compared to the tentacle - based movement and body structure of nautilus. Cephalopods are known for their complex nervous systems and head - foot structure (modified in nautilus with tentacles), while gastropods have a distinct torsion in their development and a different body organization.

Answer:

cephalopods