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Classification of animals 2

Grade　　　　　Class　　　 　　No　 　 Name

Invertebrates ：Animals do not have a spine.

①Arthropods（アースロポッド）
Animals section leg. They have outside the frame.
More than 80 percent of the animals on the earth belongs.（1 million species）

Insects（インセクト）：Dragonflies, grasshoppers, and beetles
Crustaceans（クラステイシャンズ）：Shrimp, crab, androgenic, Daphnia magna
Chelicerae（ケリセラ）：Spiders, scorpions, Horseshoe crabs
Myriapoda（ミリアポーダ）： Millipedes and centipedes, House centipede

②Molluscs（モルスク）
Animal soft body, do not have a bones.
Mantle secure integrated.
Shell, clione, snails, squid, Octopus
Originally all molluscs had shells. However, cephalopods（squid, Octopus）, it vanished.
Cephalopods develops very nervous and the shape of the maze problem can be solved.
Live in the water and breathe through gills.
But snails breathe through lungs.
If life is too long, they might was intellectual life.

③Others
Echinodermata（エコイノダマータ）：Sea urchin（ウニ）, starfish（ヒトデ）, sea cucumbers（ナマコ）, crinoids（ウミユリ）
Cnidaria（ナイデリア）: corals, jellyfish, sea anemones
Annelida（アネリーダ）: earthworms, lugworms（ゴカイ）