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Invertebrates

Invertebrates. 3.3.7.A Describe the similarities and differences that characterize diverse living things; describe how the structures of living things help them function in unique ways. Invertebrate. S PONGEBOB H EARS W EIRD M USIC A T S QUIDWARD’S. Definitions.

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Invertebrates

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  1. Invertebrates 3.3.7.A Describe the similarities and differences that characterize diverse living things; describe how the structures of living things help them function in unique ways

  2. Invertebrate • SPONGEBOB • HEARS • WEIRD • MUSIC • AT • SQUIDWARD’S

  3. Definitions • Invertebrate – Animal without a backbone • Vertebrate – Animal with a backbone • Regenerate – Regrow missing part • Scavenger – Animal that eats dead animals • Parasite – Animal that lives inside and harms other animals • Molting – Shedding skin

  4. Simplest invertebrate Pores No nervous system No complex organs Live in water Can regenerate Uses: Uses: Washing Painting Examples: Freestanding Encrusting Sponges

  5. Hollow center and one opening Live in water Look like plants Attach to rocks Some float or swim One large opening or mouth Mouth makes them more complex than sponges Tentacles stingers Hollow-Bodied • Examples: • Sea Anemone • Jellyfish • Coral • Uses: • Jewelry • Decoration

  6. Soft bodies Three groups – flatworms, roundworms, segmented worms Regenerate Some live in water, some on land, some inside the bodies of other animals (called parasites) Some are scavengers (eat dead animals) Complex organs Uses: Fishing Good for Soil Examples: Earthworm Tapeworm Planarian Roundworm Worms

  7. Uses: Food Decoration Examples: Mussels Oysters Clams Snails Octopus Squid Invertebrates with soft bodies Have shells Shells provide protection Some live in fresh or salt water Some live in moist places on land Special organs for moving, breathing, getting food, and pumping blood Footlike part for moving, digging, and feeling Mollusks

  8. Largest group of animals (75% of all animals) Exoskeleton (outside skeleton for protection) Live in water and on land Some fly Special body parts for special jobs Molts Jointed legs Body sections, 3 or 4 pairs of legs Bilateral Symmetry Uses: Food Pets Entertainment Pest Control Examples: Lobster Grasshopper Spider Tick Arthropods

  9. Sharp spines on the outside of their bodies. (Protection) Tube Feet – Tiny, suctionlike cups used for moving, feeling and feeding. Regenerate Many characteristics of adult spiny-skinned animals are not as complex as arthropods, but young spiny-skinned animals are more complex than young arthropods. Uses: Food Decoration Collecting Examples: Sea Cucumber Starfish Sea Urchin Sea Star Sand Dollar Spiny-Skinned

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