... Incurrent siphon carries water into the clam and the excurrent siphon where water wastes and water leaves. Members of this class have two-part shells that are hinged and closed by powerful muscles. How do bivalves move? 3. Most are motile when young but become sessile such as oysters. Adults are usually sessile, but the larva or _____ is free-swimming. Not all bivalves are sessile. Describe the body of bivalves. Answer: Cephalization is the concentration of sense organs, nervous control, etc., at the anterior end of the body, forming a head and brain, both during evolution and … Cephalization definition is - a tendency in the evolution of organisms to concentrate the sensory and neural organs in an anterior head. 2. Are bivalves protostomes or deuterostomes? What are siphons & what is their purpose? Grant C. Numerade Educator 02:08. Describe a clam’s circulatory system. 0000087280 00000 n 0000009544 00000 n Although cephalization is associated primarily with bilaterally symmetrical species, even some of the more primitive, radially symmetrical animals show some degree of cephalization. the body of bivalves. 8. How do you find average speed; Question about blood pressure medicine..10 points!.. Do bivalves show cephalization? How can you distinguish a mussel from a clam. Why are they called bivalves? How do bivalves move? Explain your answer. In the simplest sense, cephalization means having a head. What are siphons & what is their purpose? 9. Give a benefit and a problem with torsion? c. have well-developed nervous systems. This phylum is the first phylum to display jointed walking legs and show appendage formation. 6. 9. These three animals pull their shells closed by contracting powerful muscles near the hinge. Explain your … Continue reading "Clam Dissection Questions" Clam Dissection Questions - BIOLOGY JUNCTION Start studying Clam dissection questions. 8. Do bivalves show cephalization? how do bivalves move. How do bivalves move? Give the kingdom, phylum, and class for the clam. Do bivalves show cephalization? How can you distinguish a mussel from a clam? Explain your … Continue reading "Clam Dissection Questions" 12. Explain your … Continue reading "Clam Dissection Questions" Clam Dissection Questions - BIOLOGY JUNCTION Clams are soft-bodied animals whose internal organs are protected by two shells. 15. Do bivalves show cephalization? d. are free-living. planarian cephalization is developed.. ... Clams are considered to be a bivalve mollusc and are part of the mollusc family. Fully cephalized organisms have a head and brain, while less cephalized animals display one or more regions of nervous tissue.Cephalization is associated with bilateral symmetry and movement with the head facing forward. Do bivalves show cephalization? These have the ability to move, using muscles, and a body plan with a front end that encounters stimuli first as the animal moves forwards, and accordingly has evolved to contain many of the body's sense organs, able to detect light, chemicals, and often sound. Their … Starfish are one of the few groups of animals, along with jellyfish and sponges, that don't show cephalization. Bivalves. How can you distinguish a mussel from a clam? How do bivalves feed? 8. Adults are usually sessile, but the larva or _____ is free-swimming. Do bivalves show cephalization? In what two ways do planarian show cephalization? What are siphons & what is their purpose? 19. Explain your … Continue reading "Clam Dissection Questions" Clam Dissection Questions - BIOLOGY JUNCTION Clam Dissection Introduction The phylum Mollusca includes snails, clams, chitons, slugs, limpets, octopi, and squid. 6. Do bivalves show cephalization? No because they don't have a head 5. But mussels are cheaper, not to mention—in this writer’s opinion—generally tastier and easier to love.) Is their digestive tract complete or incomplete? Explain your answer. 7. Siphons is where where water exits and enters the clam 8. Do bivalves show cephalization? What are siphons & what is their purpose? Our Work. Explain your answer. What is torsion? Explain your answer. Their … 3. 7. The seventh phylum is phylum arthropoda, this phylum is largely composed of insects. The division of the body into distinct areas seems to have allowed diversification to occur because there are many different types of mollusks adapted to various ways of life. 5. What is the function of a statocyst? Like all mollusks, clams have a mantle. How can you distinguish a mussel from a … Why are they called bivalves? Are bivalves monoecious or dioecious? The Echinodermata are unique, in that they display bilateral symmetry in their larval stage, and a special form of fivefold radial symmetry, pentamerism in their adult life stage.. Bilaterally symmetrical animals have a dorsal side (top), a ventral side (bottom) and distinct left and right sides. Do bivalves show cephalization? Adults are usually sessile, but the larva or _____ is free-swimming. why are they called bivalves. Do bivalves show cephalization? I forgot how to do it p.. How do I find the X values of "e^x - e^(-x) … Do bivalves show cephalization? What form of courtship do gastropods use? How do bivalves move? 11. 10. 4. 3. How can you distinguish a mussel from a clam? As mollusks develop from a 11. Why are they called bivalves? Explain your answer. Are bivalves protostomes or deuterostomes? Explain your answer. They show cephalization because they have a head and are cephalapods. What are siphons & what is their purpose? Explain your answer. Why are they called bivalves? How do bivalves move? A clam has an open circulatory system which means that blood is pumped out of the heart and Cephalization is the process in animals by which nervous and sensory tissues become concentrated in the "head." What are siphons and what is their purpose? Do bivalves show cephalization? and close a bivalves shell? The group includes corals, hydras, jellyfish, Portuguese men-of-war, sea anemones, sea pens, sea whips, and sea fans. Cephalization. Explain your answer. Are bivalves protostomes or deuterostomes? As for the original question I would say very likely not, they can respond to stimulus but their response probably would not be characterized as "feeling pain". Cephalization is a characteristic feature of the Bilateria, a large group containing the majority of animal phyla. Home » Our Work » how do bivalves move. 5. b. have well-developed reproductive systems. explain their answer. Clams, Oysters, and Scallops are bivalve mollusks and are a familiar food source. 14. Do bivalves show cephalization? 6. Are bivalves protostomes or deuterostomes? The bivalves have no head, no radula, and little cephalization, as … Do bivalves show cephalization? 7. 11. 9. Is their digestive tract complete or incomplete? What are siphons & what is their purpose? 9. 21. 6. 7. 4. Some bivalves such as scallops are capable of swimming quite energetically into maturity. Is their digestive tract complete or incomplete? Adults are usually sessile, but the larva or _____ is free-swimming. The class Bivalvia consists of clams, oysters, mussels, and scallops. Do bivalves show cephalization? e. are generally microscopic. 11. Their body cavity is called the _____ cavity. The arthropods use tracheids, or book lungs for respiration, these organisms also have a full digestive system and pronounced cephalization. Are bivalves protostomes or deuterostomes? Bookmark File PDF Answer Key For The Clam Dissection Questions leaves. How can you distinguish a mussel from a clam? 4. 5. The presence of shells in this group has yielded an impressive fossil record. Explain your answer. List the three layers of a mollusk shell. 8. 6. 2. Describe the body of bivalves. How can you distinguish a mussel from a clam? 10. Do bivalves show cephalization? 10. Animals II: The Protostomes and Deuterostomes - Unit 19. segments that are fused together; regional formation of body parts that are specialized and highly adaptive; tagmata are involved in locomotion (thorax), sensation and feeding (head), or visceral activities of … 10. 4. On the other hand, the Cnidaria display radial symmetry and the Porifera exhibit no symmetry. Are bivalves protostomes or deuterostomes? 6. RP ... Snails are bivalves, and crayfish are chelicerates. 8. 5. why are they called bivalves. Explain your answer. Explain your answer. Body organs make up the _____ mass and are protected 4. In addition to these three parts, many mollusks show cephalization and have a head region with eyes and other sense organs. Cnidarian, any member of the phylum Cnidaria (Coelenterata), a group of more than 9,000 species of mostly marine animals. 16. Adults are usually sessile, but the larva or _____ is free-swimming. Adults are usually sessile, but the larva or _____ is free-swimming. Learn more about cnidarians in this article. 13. Explain your answer. How can you distinguish a mussel from a clam? Their body cavity is … a. show cephalization. ... Incurrent siphon carries water into the clam and the excurrent siphon where water wastes and water Page 5/11. explain their answer. The mollusks that have a hinged, two-part shell joined by strong muscles are called bivalves. 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