All mollusks posses which three features?
All mollusks share three defining features. Most notably, they share the feature of a muscular foot, many of which use this to move. They also have a mantel and a radula.
Because they do not have the features of an insect (plus insects are mainly creatures that fly or crawl.) Insects are defined as having a chitinous exoskeleton, a body that is segmented into three parts, a pair of antennae, compound eyes and three jointed legs. Slugs and spiders do not share all of these traits with insects. Slugs are gastropod mollusks and spiders are arachnids.
It is actually only three common structures since not all mollusks have shells. Here it is: Head- structure that contains the mouth, brain and sensory organs Foot- muscular structure that extends from the body and is used for movement Mantle- fleshy tissue that covers and protects the internal organs. It also secretes the shell for most mollusks :) B) =3 -_-
Cephalopods are a phylum of mollusks that include squids, octopi, the chambered nautilus, and cuttlefish. All cephalopods have tentacles, most are carnivores, and they are all mollusks. All mollusks have a radula, or toothy tongue, a mantle, or thin layer of tissue that covers the organs and makes the shell, and a muscular foot.