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1. 23/09/15
Variation and ClassificationVariation and Classification

2. 23/09/15
VariationVariation
Variation means “differences within a species. For example,
consider some of the people in your class:
Ways in which they are the same Ways in which they are different

3. 23/09/15
Environmental differencesEnvironmental differences
Some of this variation is due to our parents, but some of it is
due to our upbringing and the environment in which we live –
this is called “Environmental variation”.
Variation due to
inheritance only
Variation due to
environment only
Variation due to a
bit of both

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ClassificationClassification
The world is populated by millions of different species of
animals and plants…

5. 23/09/15
Classifying organismsClassifying organisms
All organisms are classified into groups. For example:
Organism
Plants Animals
Vertebrates Invertebrates
Reptiles FishBirds MammalsAmphibians

6. 23/09/15
Classifying organismsClassifying organisms
All organisms are classified into groups. For example:
Organism
Plants Animals
Vertebrates Invertebrates
Reptiles FishBirds MammalsAmphibians