Activities Unit 9 The animal kingdom: Invertebrates 1.- Where do sponges live? 2.- How do cnidarians trap their prey? 3.- Give two examples of cnidarians 4.- What is the difference between platyhelminthes and nematodes? 5.- Give three examples of annelids 6.- What is the difference between annelids and nematodes? 7.- Where do leeches live? 8.- Give two characteristics of molluscs 9.- Name the most important groups of molluscs 10.- Match each invertebrate with the correct group of molluscs 1 ____ 2____ 3____ 4____ 5____ 1 Slugs 2 Octopuses A Gastropods 3 Snails B Bivalves 4 Mussels C Cephalopods 5 Squid 6 Oysters 6____ 11.- What is the function of the ambulacral system? 12.- What protects arthropods from predators? 13.- Name the most important groups of arthropods 14.- Do crustaceans have more legs than myriapods? 15.- Fill the gaps Insects’ bodies are divided into __________ parts: head, ___________ and ____________ Insects have an _______________ that protects them and prevents ______________ Insects have legs foe walking, ____________ , _____________ and digging Insects have four types of ________________, which include ones for chewing and lapping. 16.- True or false Sponges have got tentacles with stinging cells to paralyse their prey Corals are living things Coral reefs are large structures of calcium carbonate Insects can’t destroy crops Centipedes have got less legs than millipedes Crayfish is an arachnid Leeches live in the seabed Octopuses have an ambulacral system to move around Platyhelminthes are round worms Jellyfish is a free-swimming invertebrate