1. Variation and Classification
27/11/2018
Variation and Classification
W Richards
Worthing High School

2. Variation
27/11/2018
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. Environmental differences
27/11/2018
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

4. Classification
27/11/2018
The world is populated by millions of different species of animals and plants…

5. Classifying organisms
27/11/2018
All organisms are classified into groups. For example:
Organism
Plants
Animals
Vertebrates
Invertebrates
Amphibians
Birds
Reptiles
Fish
Mammals