ANIMALS INVERTEBRATES Porifera Sponges Cnidaria umbrella jellyfish polyps

ANIMALS (INVERTEBRATES) Porifera Sponges Cnidaria umbrella jellyfish polyps (corals) They live fixed yo the ground upside up They float freely, upside down

Platyhelminthes (flat worms) Taenia doesn’t have organs, except reproductor system Nematodes (cylindrical worms) They are intestine parasites hookworms Annelids (worms with segments) Leech (bloodsucker) earthworm

Molluscs All of them have - a soft body protected by a shell. -a muscular foot to move Gastropod Snail Bibalve Mussel Cephalopods Squid

Echinoderms All of them: -are aquatic organisms - have ambulacral feet to move - have a hard esketelon with spines - reproduce sexually through eggs (the starfish can also reproduce asexually through fragmentation of its arms) Examples: Arm (They have 5) Ambulacral feet Spines satfish Spines Ambulacral feet Sea urchin Ambulacral feet Sea cucumber

Arthropods All of them: -are the most widespread group of our planet - have the body divided into segments (head, thorax and abdomen) - The body is covered by a rigid and articulated exoskeleton Chelicerae with venom to paralize thier prey Myriapods Anthens Arachnids Chelicerae with venom to paralize thier prey legs Spider Scolopendra (centipedes) Crustaceans Insects Anthens Wings Pincers legs Crab Grasshopper