Fact 1: Fertilization occurs when a sperm and an egg fuse.

Fact 2: Most cephalopods have separate sexes and fertilization is internal.

Given the two facts above, answer the question "What type of mollusk inseminate the sperm and egg internally?" with the following options: 
- insects
 - it needs them
 - graptolites
 - reproduce
 - barnacles
 - during the day
 - a fish
 - Cephalopod


 

        Cephalopod 