Classification

1
Classification

• Grouping Identifying Living Things

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

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Invertebrates

• These are animals without a backbone
• There are eight groups of invertebrates
• Sponges
• Cnidarians - Stinging celled
• Flatworms
• Annelids - Segmented
• Roundworms
• Molluscs - Soft-bodied
• Echinoderms
• Arthropods

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Sponges

• Have bodies made of loosely joined cells

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Cnidarians - Stinging-celled

• Have thin sack like bodies
• Have tentacles

8
Echinoderms - Spiny-skin

• Have bodies divided into five parts
• Have spiny outer covering

9
Flatworms

• Have flat worm like bodies

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Annelids - Segmented

• Have round worm like bodies
• Have bodies divided into segments

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Roundworms

• Have long thin round worm like bodies
• Have bodies with no segments

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Molluscs - Soft-bodied

• Crawl on a single fleshy pad.
• Can have a shell
• Different foot has different function