Cephalopods . The bodies are generally very soft and are covered by the hard exoskeleton.They can be found in terrestrial regions as well as in the depths of the seas.You will be amazed to know that the size of the molluscans can range from 20 metres to one millimetre, with a few microscopic animals too. ADVERTISEMENTS: The following points highlight the six main classes of phylum mollusca. answer choices . Cephalopods include shelled and reduced-shell groups. Bivalves. The single dorsal shell is thin and sub […] Their name, Cephalopod or "head-foot" in Greek, reflects the unique relationship between the cephalopod head and foot: the arms encircle the animals' head. Complete the template below by selecting a species within each of the classes Bivalvia, Gastropoda, and Cephalopoda. Cephalopods. (1992) Mollusca, Cephalopoda. answer choices . Which class of Mollusks include squid, cuttlefish and octopus? Monoplacophora: 1. Mollusks are the second largest phylum of invertebrate animals after the Arthropoda. Amphineura 3. 9th grade. alternatives . Gastropods . Bivalves. Gastropods. answer choices . This class of mollusks is considered to be the most intelligent. Gastropods. Pelecypoda or Bivalvia or Lamellibranchiata 6. Cephalopoda is a very ancient and successful class of mollusk presently having two groups named the Nautiloidea and the Coleoidea. Their mantle is modified into a siphon for movement via jet-propulsion, and their highly developed nervous and sensory systems include complex eyes and a centralized brain. alternatives . Examples of cephalopod molluscs include squid, octopus, cuttlefish, and nautilus (Fig. Cephalopoda. Which class of Mollusks include organisms that all have two shells? Cephalopods are mollusks (Cephalopoda), a class which includes octopuses, squid, cuttlefish, and nautilus. answer explanation ... Class Cephalopoda. In: Fauna Iberica, Phylum Mollusca. The class Cephalopoda (“head foot” animals) includes octopuses, squids, cuttlefish, and nautilus. Mollusca QUIZ DRAFT. These are ancient species that are found in all of the world's oceans, and are thought to have originated about 500 million years ago. But the giant octopus (Enteroctopus sp. The class Cephalopoda comprises two sub-classes: ... tebrate medicine that includes a chapter on cephalopods ... Guerra, A. Bivalves . Class Polyplacophora. Class Cephalopoda. The classes are: 1. Class Bivalvia Most cephalopods are relatively small. ), which lives along the west coast of the United States, can grow to 1.5 m or more. 3.65). Class Gastropoda . ... What does Cephalopod mean? Scaphopoda 5. The class Cephalopoda (“head foot” animals) includes octopuses, squids, cuttlefish, and nautilus. Class # 1. 2. They display vivid coloration, typically seen in squids and octopuses, which is used for camouflage. Many organisms belonging to this phylum have a calciferous shell. Monoplacophora 2. 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