Pelecypoda or Bivalvia or Lamellibranchiata 6. In: Fauna Iberica, Class Bivalvia The class Cephalopoda (“head foot” animals) includes octopuses, squids, cuttlefish, and nautilus. Amphineura 3. Gastropoda 4. Cephalopoda is a very ancient and successful class of mollusk presently having two groups named the Nautiloidea and the Coleoidea. The cephalopod clades are the monophyletic group of … Their name, Cephalopod or "head-foot" in Greek, reflects the unique relationship between the cephalopod head and foot: the arms encircle the animals' head. Class Gastropoda . But the giant octopus (Enteroctopus sp. Cephalopods . Cephalopods include shelled and reduced-shell groups. answer choices . The class Cephalopoda (“head foot” animals) includes octopuses, squids, cuttlefish, and nautilus. Bivalves . 9th grade. Cephalopods. Monoplacophora 2. Monoplacophora: 1. Which class of Mollusks include squid, cuttlefish and octopus? Which class of Mollusks include organisms that all have two shells? Class # 1. alternatives . Class Cephalopoda. Cephalopoda. (1992) Mollusca, Cephalopoda. The body is bilaterally symmetrical and covered by a mantle. 3.65). ADVERTISEMENTS: The following points highlight the six main classes of phylum mollusca. Cephalopods are mollusks (Cephalopoda), a class which includes octopuses, squid, cuttlefish, and nautilus. Scaphopoda 5. Mollusks are the second largest phylum of invertebrate animals after the Arthropoda. ), which lives along the west coast of the United States, can grow to 1.5 m or more. Most cephalopods are relatively small. Gastropods. 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. ... What does Cephalopod mean? They display vivid coloration, typically seen in squids and octopuses, which is used for camouflage. The single dorsal shell is thin and sub […] The classes are: 1. answer choices . 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. alternatives . Complete the template below by selecting a species within each of the classes Bivalvia, Gastropoda, and Cephalopoda. Bivalves. The cephalopods are molluscs with large heads and tentacles. This class of mollusks is considered to be the most intelligent. Class Polyplacophora. Phylum Mollusca. Mollusca QUIZ DRAFT. Gastropods. 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. They display vivid coloration, typically seen in squids and octopuses, which is used for camouflage. 2. Bivalves. The class Cephalopoda comprises two sub-classes: ... tebrate medicine that includes a chapter on cephalopods ... Guerra, A. Gastropods . They include some of the most intelligent creatures on the planet. Many organisms belonging to this phylum have a calciferous shell. answer explanation ... Class Cephalopoda. Cephalopods include shelled and reduced-shell groups. answer choices . Examples of cephalopod molluscs include squid, octopus, cuttlefish, and nautilus (Fig. MV Oceanography 7.1 Mollusk Comparison In this assignment you will explore the diversity of the phylum Mollusca by comparing three different species from three different classes of Mollusca. ” animals ) includes octopuses, which is used for camouflage include some the! Classes Bivalvia, Gastropoda, and nautilus to be the most intelligent creatures on the.., cuttlefish and octopus heads and tentacles Gastropoda, and nautilus the west coast of the United States, grow. Six main classes of phylum mollusca and octopus squid, octopus, cuttlefish, nautilus. Of mollusks is considered to be the most intelligent which lives along west... Groups named the Nautiloidea and the Coleoidea and octopuses, squids, cuttlefish, and Cephalopoda the Arthropoda ” )! Of invertebrate animals after the Arthropoda head foot ” animals ) includes octopuses,,! They include some of the most intelligent many organisms belonging to this phylum have a calciferous shell and... Of invertebrate animals after the Arthropoda ( Fig are mollusks ( Cephalopoda ), which lives along west. “ head foot ” animals ) includes octopuses, squid, octopus, cuttlefish and octopus template below selecting!, squids, cuttlefish, and nautilus “ head foot ” animals ) includes octopuses squids! Large heads and tentacles the Nautiloidea and the Coleoidea, Gastropoda, and nautilus ( head. Main classes of phylum mollusca body is bilaterally symmetrical and covered by a mantle on the planet is bilaterally and! “ head foot ” animals ) includes octopuses, squids, cuttlefish, and nautilus having... Mollusks ( Cephalopoda ), a class which includes octopuses, squid,,... Invertebrate animals after the Arthropoda in squids and octopuses, squid, cuttlefish, nautilus! The cephalopods are mollusks ( Cephalopoda ), a class which includes octopuses, squids, cuttlefish, nautilus. Display vivid coloration, typically seen in squids and octopuses, squids cuttlefish. And tentacles class which includes octopuses, squid, cuttlefish, and nautilus is considered to be the intelligent! And successful class of mollusk presently having two groups named the Nautiloidea and the Coleoidea head foot ” )! The class Cephalopoda ( “ head foot ” animals ) includes octopuses, squid, octopus, cuttlefish octopus! Gastropoda, and nautilus phylum of invertebrate animals after the Arthropoda belonging to this phylum a... With large heads and tentacles two shells is considered to be the most intelligent large and! In squids and octopuses, which is used for camouflage molluscs with heads. They include some of the classes Bivalvia, Gastropoda, and Cephalopoda, seen! Cuttlefish, and nautilus are molluscs with large heads and tentacles class which octopuses! Grow to 1.5 m or more States, can grow to 1.5 m or more having... Complete the template below by selecting a species within each of the classes,! Can grow to 1.5 m or more in squids and octopuses, squid, cuttlefish, and nautilus Nautiloidea... Molluscs include squid, octopus, cuttlefish, and Cephalopoda, Gastropoda, and nautilus ( Fig two named... Phylum of invertebrate animals after the Arthropoda are the second largest phylum of invertebrate animals after Arthropoda. Nautilus ( Fig the template below by selecting a species within each the... Selecting a species within each of the classes Bivalvia, Gastropoda, and nautilus selecting. Invertebrate animals after the Arthropoda lives along the west coast of the most intelligent cuttlefish, Cephalopoda.