Dictionary » M » Mollusca



(Science: zoology) One of the grand divisions of the animal kingdom, including the classes Cephalopoda, gastropoda, PteropodaScaphopoda, and lamellibranchiata, or Conchifera. These animals have an unsegmented bilateral body, with most of the organs and parts paired, but not repeated longitudinally. Most of them develop a mantle, which incloses either a branchial or a pulmonary cavity. They are generally more or less covered and protected by a calcareous shell, which may be univalve, bivalve, or multivalve.

Formerly the brachiopoda, Bryzoa, and tunicata were united with the lamellibranchiata in an artificial group called acephala, which was also included under Mollusca. See Molluscoudea.

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Book recommendation for exam

... honey bee and butterfly); metamorphosis in insects and its hormonal regulation; social organization in insects (termites and honey bees). 10. Mollusca : Feeding, respiration, locomotion, shell diversiy; general features and life history of Lamellidens, Pila and Sepia, torsion and detorsion ...

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by bertstare
Sun Oct 21, 2012 2:19 pm
Forum: Zoology Discussion
Topic: Book recommendation for exam
Replies: 3
Views: 8481

Cone snail

... know that handling the more exotic cone snails can be dangerous, even fatal - but what about these common ones?) Someone with knowledge of marine mollusca please help me out, this thing has bothered me for quite a while and all Google has to offer me is that they have a poisonous, barbed mouth-piece ...

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by biohazard
Tue Jun 05, 2012 9:47 am
Forum: Zoology Discussion
Topic: Cone snail
Replies: 4
Views: 6216

Garden Snail - Helix aspersa

Classification of a Garden Snail: Kingdom – Animalia Phylum – Mollusca Class – Gastropoda Order – Stylommatophora Family – Halicidae Genus – Helix Species – Aspersa What features/characteristics does the garden snail have that makes it part of that group/classification? ...

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by July100
Sun Feb 28, 2010 3:59 am
Forum: Zoology Discussion
Topic: Garden Snail - Helix aspersa
Replies: 2
Views: 8601

Can any one help me explain this?

... are taking it in the back order. If you have one kingdom, let's say animals, they are popular, they can be in phylum Cnidaria, but also in phylum Mollusca, but also in many other phyla. But if you have organisms in phylum Mollusca, than they are definitely both in kingdom Animalia, OK? So the ...

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by JackBean
Sun Oct 04, 2009 12:06 am
Forum: General Discussion
Topic: Can any one help me explain this?
Replies: 2
Views: 6882

The Colin Leslie Dean species paradox

... which contains all animals with backbones (fish, birds, mammals, reptiles, amphibians). There is also Arthropoda (insects, spiders, crustaceans); Mollusca (snails, squid, clam); Annelida (segmented worms); Echinodermata (starfish, sea urchins) and many, many more. http://en.wikipedia.org/wiki/Species ...

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by gamila
Wed Jul 15, 2009 12:45 pm
Forum: Evolution
Topic: The Colin Leslie Dean species paradox
Replies: 135
Views: 186347
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