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chapter 7 sections 1,2,3,and 4
patricks flashcards
18
Science
6th Grade
03/04/2008

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Cards

Term
Gills
Definition
The organs in which carbon dioxide in the mullusk is exchanged for oxygen in the water
Term

the word mullusk comes from the latin word meaning what?

Definition
soft
Term
what is the first thing scientists look for when they are classifing a mullusk?
Definition
whether or not it has a shell.
Term
where does the soil and neutrients go after they enter the earthworms mouth?
Definition
the crop.
Term
what are the three sections of an insect?
Definition
Head,Thorax,and Abdomen
Term
what kind of lungs do spiders have?
Definition
Book lungs
Term
which on is a predator, a centipede or a millipede
Definition
centipede
Term
how do sea stars eat?
Definition
By pushing their mouth out of their body and around the prey then retracting their mouths back into their body.
Term
what is the mantal?
Definition

a covering that covers the body organs.

Term
what is the largest group of mollusks?
Definition
Gastropods
Term
what is the only mollusk without a shell?
Definition
slug
Term
what is a bivalve?
Definition
mollusks that have a hinged two-part shell that are joined by a strong muscle.
Term
how do bivalves open and close their shells?
Definition
They open them by tightening up their muscles and they close them by retracting those muscles.
Term
how do clams stay protected.
Definition
by burrowing into the sand by contracting and relaxing their muscular foot.
Term
what are the most complex mollusks?
Definition
cephalopods
Term
what does the word cephalopod mean?
Definition
head-foot
Term
are all cephalopods predators?
Definition

yes

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