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A cephalopod is any member of the molluscan class Cephalopoda These exclusively marine .... Most cephalopods possess an assemblage of skin components that interact with light. These may include irid...

Answers to Text Questions


Of the mollusks, snails are in the class of a). gastropods. b). bivalves. c). cephalopods. d). chitons. Answer: a 2). A mantle is a). present only in bivalves.

The Cephalopod Page: Octopus, Squid, Cuttlefish, and Nautilus


The Cephalopod Page features the class of marine mollusks that includes ... Today there are only about 800 living species of cephalopods (compare that with  ...

Cephalopods - Amazing Facts on Molluscs


The construction of their body shows that cephalopods are molluscs. ... Only members of the most ancient cephalopod groups, the subclass Nautiloidea .... function on their own, because they possess own autonomous neural knots or ganglia.

Mollusks - Biology Junction


Mollusks must eat constantly because the functioning of their nephridia causes the ... Since cephalopods have tentacles, they have no need for a radula. Multiple  ...

cephalopod | class of mollusks | Britannica.com


May 9, 2016 ... Any member of the class Cephalopoda of the phylum Mollusca, a small ... it may range from only a few dozen in octopuses with large eggs to more .... Many cephalopods (but not Nautilus and Octopus) possess special light ...

Bivalves are Mollusks


The phylum of the animal kingdom, including the classes Cephalopoda, Gastropoda, ... Most mollusks possess a calcareous shell, which can be univalve, bivalve, ... Mollusks are the second largest phylum on Earth, only surpassed by the ...

The Cephalopoda - University of California Museum of Paleontology


Jump to branches within the Mollusca tree. Lophotrochozoa : Mollusca .... Today, the only living representatives of shelled cephalopods are a few species .... Some pelagic squids possess an additional color-changing structure; the light organ.

cephalopoda - Man and Mollusc


The Tetrabranchia possess an external shell and two pairs of gills. ... There are only about 400 species in existence now, compared to 10,000+ known fossil species. ... Cephalopods are the most active of all the molluscs and can even rival the ...

The Wonders of the Seas: Mollusks - Oceanic Research Group


Among the Mollusks are some of the most well known of invertebrate sea creatures, like snails, ... Nautiluses are the only Cephalopods with an external shell.

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Mollusca: Cephalopod


Cephalopods are the only mollusks with a closed circulatory system with three hearts. This is ... Female possess a single oviduct, whereas, the male produces ...

Molluscs and Annelids


Cephalopods are marine predators, feeding on fish, crustaceans, and other molluscs. They are the only molluscs with entirely closed circulatory systems.

Mollusks - MBGnet


Mollusk Maybe you think that snails, clams, mussels, squid, and octopods are very different. ... They are also the only cephalopods with four gills instead of two. ).