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Arthropods

Arthropods. Phylum Arthropoda. Athropoda : Arthron means joint, pod means foot. Includes: Lobsters, Shrimp, Crabs, Krill, and Barnacles. More than 1 million known species!

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Arthropods

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  1. Arthropods

  2. Phylum Arthropoda Athropoda: Arthron means joint, pod means foot. Includes: Lobsters, Shrimp, Crabs, Krill, and Barnacles. More than 1 million known species! Most successful: occupy greatest variety of habitats, consume greatest amount of food, exist in extremely high numbers.

  3. Subphylum • Insecta (insects) • Crustacea (means having shell) • Lobsters, crabs, crayfish, shrimp, krill, copepods, barnacles

  4. General Arthropod Morphology Bodies show clear segmentation with a pair or pairs of appendages per segment. Includes head, thorax, and abdomen sections. Bilaterally symetrical Exoskeleton: Strong, lightweight, form-fitted. Striated Muscle: Quick, strong, lightweight muscle that makes rapid movement possible. Articulation: Ability to bend appendages at specific points.

  5. Molting Arthropods molt or shed their exoskeleton made of chitin as they grow. A new exoskeleton is secreted through special glands. A blue crab that molts is called a soft shell crab and is a delicacy.

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