inverterbrates. sponges simplest invertebrate live in salt water 2 layers of cells attach to one...
TRANSCRIPT
Inverterbrates
sponges
• Simplest invertebrate• Live in salt water• 2 layers of cells• Attach to one spot
jellyfish
• Live in the ocean• Have tentacles with stinging cells• Float around trap their food
flatworms
• Flat bodies• Parasites – tapeworm• Live inside host bodies
Round worms
• Parasites – hookworm example• Found in soil and water
Segmented worms
• Have segments in their bodies• Earthworm example• They burrow through soil bring air to plants• Leeches another example – blood sucking – Used in medicine
Spiny skinned animals
• Starfish, urchins, sand dollars• Starfish have tubed feet• Can break apart clams for food
Mollusks
Octopus, squid, clam and snailsLive in both water and landMost have shells and soft bodies
Arthropods
• Largest group of animals • Jointed feet with claws• Sectioned bodies• Exoskeletons
insects
• Pair of antennae• 3 body parts, head, thorax, abdomen• Most have one or two pairs of wingsLive everywhere except the ocean
Arachnids
• Spiders and horseshoe crabs• 8 legs • Two body parts – head and abdomen
crustaceans
• Crabs, lobsters, barnacles, shrimp• Most live in the ocean or fresh water
centipedes
• One pair of jointed legs per body section • Predators – eat insects
millipedes
• Two pair of legs per body section• Often called 1000 legger• Decomposers