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Crustaceans. (Lobsters,Crabs, and Shrimp). Just the Facts…. Crustaceans belong to the Phylum Arthropoda (jointed feet) . All Arthropods have jointed appendages. All Arthropods have an exoskeleton . The Exoskeleton. Is made of a tough fibrous material called chitin .

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crustaceans

Crustaceans

(Lobsters,Crabs, and Shrimp)

just the facts
Just the Facts….
  • Crustaceans belong to the Phylum Arthropoda (jointed feet).
  • All Arthropods have jointed appendages.
  • All Arthropods have an exoskeleton.
the exoskeleton
The Exoskeleton
  • Is made of a tough fibrous material called chitin.
  • This gives the skeleton strength and flexibility.
  • There are several pairs (5 or more) of jointedappendages (movable arms and legs).
molting
Molting
  • Molting is when the exoskeleton is shed as the organism outgrows it.
other characteristics
Other Characteristics
  • Bilateral symmetry
  • Two main body segments-
    • Cephalothorax
    • Abdomen
  • They filter feed, scavenge, or are predatory
  • Use appendages for food getting and movement
  • Found throughout the oceans of the world
  • Are an important food source for other marine organisms
  • They reproduce sexually, fertilize externally
  • Have gills to breathe