5. d. Gills - Respiratory structures. Where is the oldest region of the clam? 6. Like all mollusks, a clam has a mantle which surrounds its soft body. As mollusks develop from a fertilized egg to an adult, most pass through a larval stage called the trocophore. The clam's foot is the big muscle in the middle of the clam. 8. They use their foot for burrowing. The shipworms , in the family Teredinidae have greatly elongated bodies, but their shell valves are much reduced and restricted to the anterior end of the body, where they function as scraping organs that permit the animal to dig tunnels through wood. BIO 5 GENERAL BIOLOGY. The trocophore is a ciliated, free-swimming stage. Tridacna Clams, Giant Clams at Animal-World has facts about clams with research on clams covering types of clams, where to find clams, what do clams eat, clam shells, tridacnid propogation, baby clams, pictures of clams and their marine aquarium care Biochem. Where is the mantle located in the clam? What is the function of the toothlike projections at the dorsal edge of the clam's valves? In some mollusks with shells, you can see the mantle extending from under the shell. It also has a muscular foot which enables the clam to burrow itself in mud or sand. Identify how the scallop is different. Like all mollusks, a clam has a mantle which surrounds its soft body. Clams burrow in the sand. Clam Dissection Introduction The phylum Mollusca includes snails, clams, chitons, slugs, limpets, octopi, and squid. So there are different types of feet in bivalves, from beam-shaped, tongue-shaped or worm-shaped feet. What is the function of the clam’s foot? The soft tissue above the foot is called the visceral mass and contains the clam's body organs. It provides forty-seven calories per hundred grams of edible portion. The lucinid foot is also modified to become vermiform and highly extensible (up to 5 times body length) . 9. 4 prrmurv :oo\unthellul rube (transverse wetton, H & E rta/n. What is the function of the following structures in a clam? Comp. The shell is produced by the underlying mantle; it grows along the outer margins. The structure and function of the stomachs of nine bivalves are examined. The clam is the shellfish with the lowest level of fat in its composition. Where are the incurrent & excurrent siphons located and what is their function? Properties Of Clams . Clams are marine mollusks with two valves or shells. The clam shells are symmetrical and joined by a ligament. In mollusks that have shells, such as clams, mussels, and snails, the mantle is what secretes calcium carbonate and a matrix to form the mollusk's shell. It is worth mentioning the role of Zinc in right function … A bivalve's foot is adapted to how it lives and moves. Describe the clam's foot. The foot is used for movement and attachment to different areas function of labial palps in clam: Definition. 35, pp. -shell -coelom -mantle -gonad -anus Any help would be appreciated! Bivalves—Clams and relatives (Class: Bivalvia) Bivalves have two shells (valves) held closed by powerful muscles. Mollusks also have a radula or file-like organ for feeding, a mantle that may secrete a shell, and a muscular foot for locomotion. The foot is covered in cilia (at least for T. crocea, T. maxima, T. squamosa and H. hippopus) and likely functions as a sensory organ—testing the surrounding substrate and orienting the clam … Animal body parts and their functions shell clam production sweaters, '' Paul tells us, `` has! The mantle cavity functions as a respiratory chamber in most molluscs.