… Play. Class Cephalopoda (Upper Cambrian to Recent) Cephalopods have a head with eyes. Class Cephalopoda (“head foot” animals), include octopi, squids, cuttlefish, and nautilus. 2014-11-23 04:14:46 2014-11-23 04:14:46. This class includes the extinct ammonites and nautiloids. Mollusks are herbivores, carnivores, filter feeders, detritovores, or parasites. 5. The proportion of undescribed species is very high. All animals in this class are carnivorous predators and have beak-like jaws at the anterior end. 0% average accuracy. Learn more about cephalopods in this article. Some mollusks, like tusk shells and bivalves, possess clusters of neurons (called ganglions) rather than true brains, while the brains of more advanced mollusks like cephalopods and gastropods are wrapped around their esophagi rather than isolated in hard skulls. Mollusks Class Cephalopoda DRAFT. Question 6 5 out of 5 points The classes Gastropoda, Bivalvia, and Cephalopoda belong to the phylum Mollusca. Cuttlefish have an internal shell, called the cuttlebone. They have large W shaped eyes, eight arms and two tentacles furnished with suckers, with which they secure their prey. See more. Cephalopods include shelled and reduced-shell groups. These highly intelligent mollusks have prominent eyes remarkably similar in structure to those of vertebrates. … The shell of these creatures is often what is recovered in a fossil dig. Pelecypoda (Bivalves) 3. Gastropoda 2. Gills of clams collect food as well as O2 . Class Cephalopoda. Homework. Despite their name, cuttlefish are not fish but mollusks. Answer. Aug 15, 2014 - Cuttlefish are marine animals of the order Sepiida. Many, like octopus and squid have sharp jaws. Despite their name, cuttlefish are not fish but mollusks. Mollusks. The Cephalopoda Squids, octopuses, nautilus, and ammonites No. These classes are distinguished by, among other criteria, the presence and types of shells they possess. 6th - 12th grade . The arms, tentacles, and funnel are all derivatives of the foot. Some have no shell, such as the nautilus, squids, and octopi. The class is made up of the snails, which have a shell into which the animal can withdraw, and the slugs, which are snails whose shells have … Print; Share; Edit; Delete; Host a game. It shares this phylum with its brethren squid and mollusks. Cephalopods are mollusks (Cephalopoda), a class which includes octopuses, squid, cuttlefish, and nautilus. What Do Each Of These Classes Of Mollusks Means? Played 0 times. Despite their name, cuttlefish are not fish but mollusks. The largest number of species of mollusks are in the class Gastropoda, which includes snails with a coiled shell, and others lacking a shell. All mollusks reproduce sexually. They display vivid coloration, typically seen in squids and octopi, which is used for camouflage. Class Cephalopoda The Class Cephalopoda includes mollusks that are active marine predators such as octopus, squid, and chambered nautilus. Their shells are chambered and may be straight or spiral. The most common mollusk belongs to the class gastropod. Cuttlefish are marine animals that belong to the class Cephalopoda. They display vivid coloration, typically seen in squids and octopuses, which is used for camouflage. Cuttlefish are marine animals that belong to the class Cephalopoda. Answer Selected Answer: a. To this class belong the Nautili, Squids, Cuttle-fish, etc. This quiz is incomplete! Finally, the fourth class of mollusks is the one known as Cephalopoda. They eat small mollusks including other cuttlefish, crabs, shrimp, and fish. Gastropods are by far the largest class of molluscs, comprising over 80% of all molluscs. Look it up now! These mollusks have a distinct head and, usually, at least one pair of tentacles (sometimes two pairs).