Classification Grouping Identifying Living Things Why classify Think
- Slides: 25
Classification Grouping & Identifying Living Things
Why classify? Ø Think of three examples where we group things. Ø Why do we group these things?
Classifying Living Things Ø We put livings things into two large groups: ØAnimals ØPlants
Animals Ø Animals are spilt into two major groups: ØVertebrates ØInvertebrates
Vertebrates Ø These are animals with a backbone. Ø There are five groups of vertebrates: ØAmphibians ØBirds ØFish ØMammals ØReptiles
Amphibians Ø Have moist skin Ø Lay jelly coated eggs in water Ø Lives on land water
Birds Ø Have feathers and hollow bones Ø Lay hard shelled eggs Ø Warm blooded
Fish Ø Have wet scales Ø Lays eggs in water Ø Lives in water
Mammals Ø Have hair and produce milk Ø Give birth to live offspring (no eggs) Ø Warm blooded
Reptiles Ø Have dry scales Ø Lay leathery shelled eggs Ø Cold blooded
Summary of Vertebrates
Invertebrates Ø These are animals without a backbone Ø There are eight groups of invertebrates Ø Molluscs Ø Flatworms Ø Annelids Ø Roundworms Ø Sponges Ø Echinoderms Ø Cnidarians Ø Arthropods
Molluscs Ø Crawl on a single fleshy pad. Ø Can have a shell
Flatworms Ø Have flat worm like bodies
Annelids Ø Have round worm like bodies Ø Have bodies divided into segments
Roundworms Ø Have long thin round worm like bodies Ø Have bodies with no segments
Sponges Ø Have bodies made of loosely joined cells
Echinoderms Ø Have bodies divided into five parts Ø Have spiny outer covering
Cnidarians Ø Have thin sack like bodies Ø Have tentacles
Arthropods Ø Have lots of legs and segmented bodies. Ø There are four group of arthropods: Ø Arachnids ØCentipedes & Millipedes ØCrustaceans ØInsects
Arthropods - Arachnid Ø Have four pairs of legs. Ø Have bodies divided into two sections
Arthropods – Centipedes & Millipedes Ø Have long thin bodies and pairs of legs on each of their many body sections
Arthropods - Crustacean Ø Have five-seven pairs of legs Ø First pair often used as pincers Ø Bodies covered in shell
Arthropods - Insects Ø Have three pairs of legs Ø Bodies divided into three sections Ø Often have wings
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