Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download INVERTEBRATE ANIMALS
Document related concepts
Transcript
INVERTEBRATE ANIMALS SPONGES Simplest animals Soft bodies made of spongin Live in the ocean No body organs Ex: deep sea sponge, luffa sponge JELLYFISH FAMILY Soft bodies that float or attach to bottom Tentacles with stinging cells Mouth underneath body Ex: sea nettle, Portuguese man-o-war, coral, sea anemone WORMS Long, thin bodies No shell or skeleton Can be flat, round, or have segments Can be free living or can be parasites ex: tapeworm, nematodes, earthworm MOLLUSKS Soft bodies Live in water or on land Can have a muscular “foot” Some have shells (snail, oyster, clam) Some have no shell (slug, octopus, squid) SPINY SKIN ANIMALS (echinoderm) thick, sandpapery skin 5 arms, or multiples of 5 suction cups under arms Mouth on the bottom Tongue like sandpaper ex: starfish, sea urchin Notes: THESE INVERTEBRATES ARE ALSO ARTHROPODS: Notes: INSECTS Arthropods (jointed legs) 3 body parts: head, thorax, abdomen 1 pair of antennae 6 legs some have 2 pairs of wings ex: bees, ants, butterflies, beetles, grasshoppers ARACHNIDS Arthropods (jointed legs) 2 body sections: Cephalothorax and abdomen 8 legs mouth parts: fangs, sucking ex: spiders, ticks, scorpions, mites CENTIPEDES Many body segments 1 pair of legs on each segment (look like they have 100 legs) 1 pair of antennae; poisonous fangs Predators – run fast to catch prey MILLIPEDES Many body segments 2 pairs of legs on each segment (look like they have 1000 legs) 1 pair of small antennae Herbivores (eat plants) Curl up when scared CRUSTACEANS Arthropods (jointed legs) Live in water (except for woodlice) Hard shell 2 pairs of antennae 10 total legs; can have pincers ex: shrimp, crabs, lobsters Created by: Thomas Hutson, 4-H Educator, University of Maryland Extension. E-mail: [email protected]
