AP BIOLOGY

Detailed explanation-1: -The class of molluscs called Bivalvia (from Latin root words bi-meaning two and-valv meaning folding door) includes clams, oysters, mussels, and scallops. Bivalves produce two shells that are hinged at the top (Fig. 3.49 B). The mantle of snails (gastropods) produces a single shell in a spiral shape (Fig.

Detailed explanation-2: -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-3: -Class Gastropoda – snails, slugs, limpets, whelks, conchs, periwinkles, etc. Class Bivalvia – clams, oysters, mussels, scallops, cockles, shipworms, etc. The Class Scaphopoda contains about 400 species of molluscs called tooth or tusk shells, all of which are marine.

Detailed explanation-4: -Clams belong to a group of invertebrates called mollusks. There are over 100, 000 kinds of animals or species in the Mollusca phylum or category. Clams are also known as shellfish. The term shellfish includes members of the mollusk phylum and the crustacean subphylum.

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.