INVERTEBRATES ( without spine ) INVERTEBRATES CHARASTERISTICS : ► Haven’t got spine
► Leg eggs
SHELLFISH -Bivalvos (Have got a shell with two valves) .Mussel ►MOLLUSKS - Moluscos (their body is soft and muscular)
GASTROPODS -Gasterópodos (Can have got a Shell). Snail
CEPHALOPODS -Cefalópodos (Haven’t got shells, have got tentacles surrounding the mouth). Octopus
INSECTS—Insectos (have got 6 legs). Grasshopper ARACHNIDS—Arácnidos (have got 8 legs). Spider.
INVERTEBRATES CLASSIFICATION
►ARTHROPODS - Artrópodos (Have got an articulated and hard body, Have got legs)
CRUSTACEANS– Crustáceos (have got 10 legs). Prawn MILLIPEDES– Miriápodos (have got + 10 legs). Centipede.
►WORMS - Gusanos. Earth worm. (Have got an elongated, soft boby formed by rings) ► SPONGE– Esponjas (Have got soft body and a lot of pores) ► ECHINODERMS - Equinodermos. Starfish (Have got radial symmetry. Live at bottom of the sea) ►JELLYFISH - Medusas. (Are transparent and have got the shape of an umbrella. Radial symmetry. Can move) SEA ANEMONE– Anémona. (Radial symmetry. Can’t move) CORALS—Corales. (Radial symmetry. Can’t move)