Variety of Living Organisms
- Living organisms show great variety, e.g.
- Size
- Bacteria are microscopic while blue whales are very large
- Features
- Plant cells have features which enable them to carry out photosynthesis while animal cells do not
- Complexity
- Single-celled organisms are more simple than multicellular organisms
- Size
- This variety can be used to place organisms into groups, e.g.
- Plants can be grouped into:
- Flowering plants that produce flowers
- E.g. sunflowers, grasses and oak trees
- Non-flowering plants that do not produce flowers
- E.g. mosses and ferns
- Flowering plants that produce flowers
- Animals can be grouped into:
- Vertebrates that have a backbone
- E.g. mammals and birds
- Invertebrates that do not have a backbone
- E.g. insects and arachnids
- Vertebrates that have a backbone
- Plants can be grouped into:
Plant and animal groups diagram
Plants can grouped into flowering and non-flowering plants while animals can be vertebrates or invertebrates