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20 Cards in this Set

  • Front
  • Back

What phylum do clams belong to?

Molluscs

How many estimated species of Mollusks are there?

There are over 50,000 known species of Mollusks

Are mollusks lophotrochozoans?

Yes

What two main body groups do mollusks have?

A Head foot and visceral mass

The shell in mollusks is secreted by what structure?

The mantle

What is the rasping structure in mollusks called

The Radula

What class are snails and slugs in?

The Class Gastropoda

What class are clams and mussels in?

Bivalvia

What are the muscles in clams responsible for closing the shell?

hinge ligament

What structure in clams is involved in gas exchange?

One or two gills in mantle cavity

What class to squids, octopuses and nautili belong to

Cephalopod

What class of mollusks is the most complex?

Cephalopod

Which class of mollusks are the only ones with closed circulatory systems?

Cephalopods

What cells in cephalopods are pigmented?

Chromatophores

Sperm-packets of cephalopods are called?

Coleoidea

Which tentacle delivers the sperm-packet?

The two tentacles

What type of skeleton does Mollusks posses?

Bilateral

What is the ink sac for? Pen?

Is a defense mechanism to use against there predators, to escape without being harmed.

How do squid locomote?

A squid moves using a system of jet propulsion, pulling water into its mantle cavity, contracting the muscles of the mantle wall and expelling the water through its siphon or funnel. Its fins aid maneuverability and also help with lift and motion while the squid travels at slow speeds.

List all the classes from the PPT in the phylum Mollusks, give identifying characteristics of each class. Also give an example of an animal e.g. Chitons

Animal Diversity 3 includes snails, slugs, clams,scallops, oysters, cuttlefish, squid, octopus.


Animal Diversity 3 Seven classes of mollusks - Fourclasses covered here Class Polyplacophora - chitonsClass Gastropoda - Snails, slugs, limpetsClass Bivalvia - Clams, oysters, scallopsClass Cephalopoda- Squids, octopus, cuttlefishes, Nautilus