AP BIOLOGY

Detailed explanation-1: -Mollusks are a large group of invertebrate animals. Mollusks have soft bodies, and their bodies are not divided into rings like the segmented worms called annelids . Mollusks don’t have legs, though some have flexible tentacles for sensing their environment or grabbing things.

Detailed explanation-2: -The Class Gastropoda (in Phylum Mollusca) includes the groups pertaining to snails and slugs. The majority of gastropods have a single, usually spirally, coiled shell into which the body can be withdrawn. The shell of these creatures is often what is recovered in a fossil dig.

Detailed explanation-3: -Molluscs have more varied forms than any other animal phylum. They include snails, slugs and other gastropods; clams and other bivalves; squids and other cephalopods; and other lesser-known but similarly distinctive subgroups.

Detailed explanation-4: -4. What are the four major mollusks? They are gastropods, bivalves, cephalopods, and scaphopods.

Detailed explanation-5: -Clams, oysters, snails, chitons, octopi, and squid are all members of the Phylum Molluska. Many people know the mollusks of this area by the seashells they leave behind. Most of these seashells were made and used by mollusks, but some belonged to crustaceans or other marine invertebrates.