1. Grouping & Identifying Living Things
Classification
Grouping & Identifying Living Things
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2. Why classify? Think of three examples where we group things.
Why do we group these things?

3. Classifying Living Things
We put livings things into two large groups:
Animals
Plants

4. Animals Animals are spilt into two major groups: Vertebrates
Invertebrates

5. Vertebrates These are animals with a backbone.
There are five groups of vertebrates:
Amphibians
Birds
Fish
Reptiles
mammals

6. Amphibians Features: live on land and in water
Have gills as youth and lungs as adults

7. Birds Have feathers and hollow bones Lay hard shelled eggs
Warm blooded

8. Fish
Characteristics vary dependant on which category the fish is classified under
Features –
Boney – Osteichthyes
Cartilaginous – Chondrichthyes
Jawless - Agnatha

9. Reptiles
Features:
lay eggs
Cold blooded
Dry, scaly skin
Breathe air

10. Mammals CHARACTERISTICS Have hair and produce milk
Give birth to live offspring (no eggs)
Warm blooded

11. Summary of Vertebrates

12. Invertebrates These are animals without a backbone
There are eight groups of invertebrates
We will discuss
four
Nematodes
Annelids
Molluscs
Arthropods

13. Molluscs
Crawl on a single fleshy pad.
Can have a shell

14. Annelids
Features –
Ring like segments
Most live in water some on land

15. Nematodes Have long thin round worm like bodies
Have bodies with no segments

16. Arthropods Have lots of legs and segmented bodies.
There are four group of arthropods:
Arachnids
Centipedes & Millipedes
Crustaceans
Insects

17. Arthropods Have lots of legs and segmented bodies.
There are four group of arthropods:
Arachnids
Centipedes & Millipedes
Crustaceans
Insects

18. Arachnids - spiders ticks and scorpians
Four pair of jointed legs
Land dwelling
Breathe through gills called book lungs
exoskeleton

19. Arthropods – Myriapods Centipedes & Millipedes
Body has many segments
Each segment has jointed legs

20. Arthropods - Crustacean
Have five-seven pairs of legs
First pair often used as pincers
Bodies covered in shell
Breathe through
gills

21. Arthropods - Insects Have three pairs of jointed legs
Bodies divided into three sections
Often have wings
Exoskeleton
Breathe - tracheae

22. Summary