1 / 19

Classification

Classification. Classification. What is classification? Organising living things into groups: Anatomy Genetics. Horseshoe crab Anatomically - looks like a crab Genetically - more closely related to spiders. Classification. Why classify organisms?. Blue whale - MAMMAL. Classification.

morgana
Download Presentation

Classification

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Classification

  2. Classification What is classification? • Organising living things into groups: • Anatomy • Genetics Horseshoe crab Anatomically - looks like a crab Genetically - more closely related to spiders

  3. Classification Why classify organisms? Blue whale - MAMMAL

  4. Classification Why classify organisms? • Helps others understand which species you are talking about • Can group species based on shared characteristics • To study phylogeny – how related species are Emperor penguin - BIRD Dusky dolphin - MAMMAL

  5. Classification • Linnaean classification • Genus and species,e.g. Homo sapiens Panthera leo Panthera tigris

  6. Classification • Genus and species are the tip of the iceberg • There are many different levels in the classification hierarchy • Top level is the 5 Kingdoms: • Protists (e.g. amoebae, algae) • Prokaryotes (e.g. bacteria, archaebacteria) • Fungi • Plants • Animals

  7. Classification Kingdom Animalia • ~ 1.26 million animal species • Vertebrates and invertebrates • ~ 1.2 million are invertebrates (e.g. insects, crustaceans) • ~ 60,000 are vertebrates Monarch butterfly INVERTEBRATE Great white shark VERTEBRATE

  8. Classification INVERTEBRATES • No spinal column (also called backbone) • No internal skeleton VERTEBRATES • Have a spinal column • Have an internal skeleton Vertebrates are divided into five groups: • Fish • Amphibians • Reptiles • Birds • Mammals Seven-spot ladybird INVERTEBRATE Purple frog VERTEBRATE

  9. The Vertebrates Mammals • Produce milk from mammary glands to feed young • Maintain constant body temperature (warm-blooded) • Covering of hair • Give birth to live young

  10. The Vertebrates Birds • Maintain a constant body temperature (warm-blooded) • Reproduce by laying eggs • Have feathers • Most can fly • Have a beak

  11. The Vertebrates Reptiles • Don’t regulate body temperature (cold-blooded) • Tough scaly skin • Most lay eggs with leathery shells

  12. The Vertebrates Amphibians • Don’t regulate body temperature (cold-blooded) • Lay eggs in water • Life cycle involves transformation from aquatic larvae to terrestrial adult • Can respire through porous skin

  13. The Vertebrates Fish • A collection of four distantly related groups • Breathe underwater using internal gills for gas exchange • Body covered with scales • Most don’t regulate body temperature (cold-blooded)

  14. Vertebrates Activity 1: Guess Zoo • Get into groups of 6 - 8 • Take a species card - DO NOT LOOK AT IT! • Hold the card on your head for the rest of your group to see • Take turns to ask Yes or No Questions to work out which animal you are • Ask questions based on classification • e.g. do I have cold blood? Note: Asking if you are a mammal, bird, reptile, amphibian or fish is against the rules!

  15. Invertebrates Activity 2: Insect classification Insects are probably the most successful of all invertebrates. All insects have: • An external skeleton • A body split into three segments – head, thorax and abdomen • Six jointed legs, one pair on each body segment • Antennae

  16. Invertebrates Activity 2: Insect classification Most insects have: • 2 or 4 wings for all or part of their life • Compound eyes

  17. Invertebrates Activity 2: Insect classification • Use a computer to researchthe following insect orders: Coleoptera, Hymenoptera, Lepidoptera, Diptera, Odonata • Using www.ARKive.org for inspiration, draw a typical species of 1 or 2 of these groups on A3 paper • Label the diagram with the defining features of the insect order it belongs to

  18. Grasshoppers and crickets Orthoptera - Stridulation – rubbing wings/legs/abdomen to create sound Wings folded over abdomen Large eyes Ovipositor Ears in legs or abdomen Incomplete metamorphosis

  19. Discussion questions • Why do we classify organisms? • What are the defining characteristics of mammals? • What are the defining characteristics of insects?

More Related