In what ways (at least three) do cephalopods differ from other mollusks?

Answer 1

basically they differ in that they're very adapted for their predator life. So they're adapted to hunt, grasp and devour.

1. They're the only mollusks that are active swimmers

2. They have a parrot-like beak which is used in biting into prey

3. They as lo have very well developed eyesight since the eye focuses by moving its position rather than change shape of the lens.

4. They have a more developed nervous system than other mollusks

5. All but nautilus have an ink sac opening off the rectum which contains ink for confusing the enemy.

6. The body color can change in response to stimuli and change by pigment cells called chromatophores.

you can't say that they lack a shell because squids have an inner shell and nautiluses have an outer shell. You could say most have internal shells though.

Answer 2

Mollusks Cephalopods