a chitinous band in the mouth of most mollusks, set with numerous, minute, horny teeth and drawn backward and forward over the floor of the mouth in the process of breaking up food. ... horny, ribbonlike structure found in the mouths of all mollusks except the bivalves. The radula, part of the odontophore,
dictionary.reference.com/browse/radula dictionary.reference.com/browse/radula
Radula - Wikipedia, the free encyclopedia
The radula (plural radulae or radulas ) is an anatomical structure found in mollusks and used for feeding. It is a minutely toothed, chitinous ribbon. It is typically used for scraping or cuttin...
en.wikipedia.org/wiki/Radula
Subphylum Amphineura- Early Cambrian to Holocene, (molluscs with radula, mouth and anus at opposite ends of the body). Class Aplacophora (recent, taphonomy? ...
web.missouri.edu/~macleodk/paleo5-27h%20mollusc%20notes... web.missouri.edu/~macleodk/paleo5-27h%20mollusc%20notes.pdf
3.  Summarize the evidence which places the mollusks where they are in relationship to the annelids on the phylogenetic tree. ... 6.  List and briefly describe the molluscan characteristics of shell, mantle, radula and foot in each of the seven classes. ... 19.  Name the unique organ in the mollusk mouth which is used for feeding.
www.wncc.net/courses/dnash/zoology/molluska.htm www.wncc.net/courses/dnash/zoology/molluska.htm
Oceanside Meadows Innstitute for the Arts and Sciences presents: Wonders of the Sea: Mollusks ... The head includes sense organs (tentacles and eyes) and a mouth that is armed with a radula and sometimes jaws. The mantle often includes the tubular respiratory siphon. But there are deviations from all these standard...
www.oceaninn.com/guides/mollusks.htm www.oceaninn.com/guides/mollusks.htm
Many mollusks have a radula, a tongue of sorts, which is rough ... Cephalopods do share many characteristic molluscan traits with the rest of the creatures in the phylum, such as the presence of a mantle and mantle cavity, a radula in the mouth and a U-shaped digestive tract (useful for a creature in a conical shell,
www.oceanicresearch.org/education/wonders/mollusk.html www.oceanicresearch.org/education/wonders/mollusk.html
A chiton uses its radula (tongue) to scrape algae off rocks. It also has very ... Cephalopods have a more developed nervous system than other mollusks. They also have very well developed eyesight that is used in finding prey. Once prey is found, it is grasped firmly and eaten with a mouth located at the base of the arms.
www.mbgnet.net/salt/oceans/animals/mollusk.htm www.mbgnet.net/salt/oceans/animals/mollusk.htm
The freshwater Sinistral Pond Snail (Physella sp.) scrapes algae from the glass with its radula, the two "toothy" arcs you can see lining the mouth. Click on the photo for a closer look.
www.ucmp.berkeley.edu/taxa/inverts/mollusca/mollusca.ph... www.ucmp.berkeley.edu/taxa/inverts/mollusca/mollusca.php
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• Most mollusks have some sort of shell. • Finally, mollusks have radula, a tongue like projection that shreds food. gill anus mantle cavity foot shell mantle stomach excretory organ heart digestive gland radula mouth;
carbon.cudenver.edu/~gcronin/101006_2.pdf
In general, among Mollusks, the mouth opens into a buccal cavity. In most classes of Mollusks, the buccal cavity contains a tongue called the odontophore. The odontophore possess multiple rows of teeth called radula that chitonous and flexible.
deepseanews.com/2008/03/on-how-mollusks-are-cooler-than... deepseanews.com/2008/03/on-how-mollusks-are-cooler-than-echinoderms-or-anything-else-pt-3-the-radula/