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Science Unit 2
Mollusks
18
Science
4th Grade
02/18/2008

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Term
clam
Definition

a water mollusk

with a two part shell

& hatched shped foot

Term
mollusks
Definition

a group of animals with

soft bodies,

 many of which are protected by shells

Term
octopus
Definition
a sea mollusk having eight arms with sucking pads
Term
slug
Definition
a common garden mollusk without a shell
Term
snail
Definition
a land or water mollusk with a spiral shell and a wide foot
Term
mollusks have no skeleton
Definition
Term
mollusks have soft, moist bodies
Definition
Term
many mollusks have hard shells for protection
Definition
Term
the largest group of mollusks are have one part shells
Definition
their shells are all in one piece
Term
a one part shell has a spiral pattern that winds toward the center
Definition
Term
a one part shell mollusk has a foot at the opening of its shell it uses to move with
Definition
Term
a snails trails is a sticky, slippery slime which protects it as it moves along
Definition
Term
snails eat algae
Definition
Term
some mollusks have two part shells
Definition
Term
mollusks with two part shells all live in water
Definition
Term
oysters make pearls
Definition
Term
octo means
Definition
eight
Term
the octopus have two forms of protection
Definition

squirting black ink &

shoot water forward so it moves backward

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