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Animal Kingdom: Invertebrates

Animal Kingdom: Invertebrates. Sponges Annelids: Worms Mollusks: Oysters, clams, octopus, snails Arthropods: Insects, spiders, crab/lobster Echinoderms: Starfish. Sponges. Feed by drawing water into spores No body symmetry, no tissues or organ system. Sponges. Annelids: Worms.

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Animal Kingdom: Invertebrates

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  1. Animal Kingdom:Invertebrates Sponges Annelids:Worms Mollusks:Oysters, clams, octopus, snails Arthropods:Insects, spiders, crab/lobster Echinoderms:Starfish

  2. Sponges • Feed by drawing water into spores • No body symmetry, no tissues or organ system

  3. Sponges

  4. Annelids: Worms • Bodies are divided into segments. • Have very well-developed internal organs. • Some have long bristles, some have short. Others seem smooth. • There are about 9,000 species of Annelids known today, including worms and leeches.

  5. Annelids: Worms

  6. Mollusks: Mussel, clam, snail… • Have soft, skin-like organ covered with a hard outside shell. • Some live on land, such as the snail and slug. • Others live in water, such as the oyster, mussel, clam, squid and octopus.

  7. Mollusks: Mussel, clam, snail…

  8. Arthropod: Crustaceans (crab/lobster) • Have hard, external shell which protects their body. • Have a head and abdomen. • Head has antennae, which are part of their sensory system. • Abdomen includes heart, digestive system and reproductive system. • Abdomen also has appendages, such as legs, for crawling and swimming. • Many have claws that help with crawling and eating.

  9. Arthropod: Crustaceans (crab/lobster)

  10. Arthropods: Arachnids (spiders) • Have a hard exoskeleton and jointed appendages for walking. • Unlike other arthropods, spiders do not have antennae. • Common arachnids are the spider, scorpions, ticks and mites.

  11. Arthropods: Arachnids (spiders)

  12. Arthropod: Insects • Largest group of arthropods (over 800,000). • Are very adaptable, living almost everywhere in the world. • Have an exoskeleton that covers their entire body. • An insect's body consists of the head, thorax and abdomen.

  13. Arthropod: Insects

  14. Echinoderm: Starfish • Marine animals that live in the ocean. • Have arms or spines that radiate from the center of their body. • Central body contains their organs, and their mouth for feeding. • Sea stars, commonly known as the starfish, have 5 or more arms attached to their body. • Sea urchins have many spines connected to their body. These spines help to protect them from predators.

  15. Echinoderm: Starfish

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