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Chptr4 lssn3

6th grade SCI

TermDefinition
Exoskeleton a rigid, external skeleton found in arthropods (like insects, crabs, and spiders) that provides support, protection, and muscle attachment,
Endoskeleton an internal structural framework, typically made of bone and cartilage, found inside animals like humans, providing support, protecting organs, enabling movement, and serving functions like mineral storage and blood cell production.
Share the basic definition of an invertebrate a cold-blooded animal that does not have a backbone or a bony internal skeleton.
List the eight main groups of invertebrates 1.Porifera (sponges), 2.Cnidaria (jellyfish, corals), 3.Platyhelminthes (flatworms), 4.Nematoda (roundworms), 5.Annelida (segmented worms), 6.Mollusca (snails, clams, squids), 7.Echinodermata (starfish, sea urchins), and 8.Arthropoda (insec
Porifera
Cnidaria
I , Platyhelminthes ()
Nematoda
Annelida
Mollusca
Echinodermata
Arthropoda.
Created by: user-1966872
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