Source: https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-1-1-biodiversity-and-classification [Revision notes](https://senecalearning.com/en-gb/revision-notes.md) › [Primary](https://senecalearning.com/en-gb/revision-notes/primary.md) › [Science](https://senecalearning.com/en-gb/revision-notes/primary/science.md) › [Science: Year 3 & 4 National Curriculum](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum.md) › Biodiversity & Classification # Biodiversity & Classification Science: Year 3 & 4 National Curriculum, topic 6.1.1 ## How Do We Group Living Things? There are lots of living things on Earth. You need to know some keywords about living things and how we group living things. Let's look at these keywords... ### Biodiversity ![Biodiversity](https://image-v2.cdn.app.senecalearning.com/2018-08/eeeae8d9-efee-41bc-8e5e-23daff64465b/earth-1617121_1920.jpg) - The range of living things on Earth is huge! - We call this __biodiversity__. ### Classification ![Classification](https://image-v2.cdn.app.senecalearning.com/2018-09/6a4b27ec-94ff-4bfe-be74-d06be289ab08/giraffes-627031_1920.jpg) - We group living things together based on the common features they have. - Living things means both animals and plants. - This grouping is called __classification__. ## Test yourself on Biodiversity & Classification - What is 'biodiversity'? - What do you call the grouping of living things based on their common features? [Practise this topic for free](https://app.senecalearning.com/classroom/course/387be3cf-f0c3-401f-9de4-e8658803ed6d/section/f1ab960a-a1c0-462f-b8a3-e7f819480833/session) - Previous topic: [5.1.5 Uses of Magnets](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/5-1-5-uses-of-magnets.md) - Next topic: [6.1.2 Grouping Animals](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-1-2-grouping-animals.md) ## Science: Year 3 & 4 National Curriculum contents ### 1 Year 3: Plants - 1.1 Types of Plants - [1.1.1 Flowering & Non-flowering Plants](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/1-1-1-flowering-and-non-flowering-plants.md) - 1.2 Parts of a Plant - [1.2.1 Roots](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/1-2-1-roots.md) - [1.2.2 What do Roots do?](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/1-2-2-what-do-roots-do.md) - [1.2.3 Stem](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/1-2-3-stem.md) - [1.2.4 Leaves](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/1-2-4-leaves.md) - [1.2.5 How Leaves Make Food](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/1-2-5-how-leaves-make-food.md) - [1.2.6 Flowers](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/1-2-6-flowers.md) - 1.3 Pollination - [1.3.1 Pollination](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/1-3-1-pollination.md) - [1.3.2 Pollination by Insects](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/1-3-2-pollination-by-insects.md) - [1.3.3 Pollination by the Wind](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/1-3-3-pollination-by-the-wind.md) - 1.4 Seeds - [1.4.1 Types of Seeds](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/1-4-1-types-of-seeds.md) - [1.4.2 Dispersing Seeds](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/1-4-2-dispersing-seeds.md) ### 2 Year 3: Animals (Including Humans) - 2.1 Food - [2.1.1 The Need for Food](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/2-1-1-the-need-for-food.md) - [2.1.2 Food Groups](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/2-1-2-food-groups.md) - [2.1.3 Carbohydrates](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/2-1-3-carbohydrates.md) - [2.1.4 Proteins](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/2-1-4-proteins.md) - [2.1.5 Dairy](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/2-1-5-dairy.md) - [2.1.6 Fruit & Vegetables](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/2-1-6-fruit-and-vegetables.md) - [2.1.7 Fats](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/2-1-7-fats.md) - [2.1.8 Junk Food](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/2-1-8-junk-food.md) - 2.2 Skeletons & Muscles - [2.2.1 Skeletons & Muscles](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/2-2-1-skeletons-and-muscles.md) - [2.2.2 Healthy Bones](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/2-2-2-healthy-bones.md) ### 3 Year 3: Rocks - 3.1 Rocks on Earth - [3.1.1 Rocks](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/3-1-1-rocks.md) - [3.1.2 Fossils](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/3-1-2-fossils.md) ### 4 Year 3: Light - 4.1 What is Light? - [4.1.1 Light as Energy](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/4-1-1-light-as-energy.md) - [4.1.2 Reflections](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/4-1-2-reflections.md) - [4.1.3 Sunlight](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/4-1-3-sunlight.md) - [4.1.4 Shadows](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/4-1-4-shadows.md) ### 5 Year 3: Forces & Magnets - 5.1 Forces - [5.1.1 What is a Force?](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/5-1-1-what-is-a-force.md) - [5.1.2 Contact & Non-Contact Forces](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/5-1-2-contact-and-non-contact-forces.md) - [5.1.3 Testing Magnetic Materials](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/5-1-3-testing-magnetic-materials.md) - [5.1.4 Attracting & Repelling Magnets](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/5-1-4-attracting-and-repelling-magnets.md) - [5.1.5 Uses of Magnets](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/5-1-5-uses-of-magnets.md) ### 6 Year 4: Living Things & Their Habitats - 6.1 Grouping Animals - [6.1.1 Biodiversity & Classification](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-1-1-biodiversity-and-classification.md) - [6.1.2 Grouping Animals](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-1-2-grouping-animals.md) - 6.2 Vertebrates - [6.2.1 Vertebrates](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-2-1-vertebrates.md) - [6.2.2 Mammals](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-2-2-mammals.md) - [6.2.3 Reptiles](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-2-3-reptiles.md) - [6.2.4 Fish](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-2-4-fish.md) - [6.2.5 Amphibians](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-2-5-amphibians.md) - [6.2.6 Birds](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-2-6-birds.md) - 6.3 Invertebrates - [6.3.1 Invertebrates](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-3-1-invertebrates.md) - [6.3.2 Insects](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-3-2-insects.md) - [6.3.3 Spiders](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-3-3-spiders.md) - [6.3.4 Slugs & Snails](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-3-4-slugs-and-snails.md) - [6.3.5 Worms](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-3-5-worms.md) - 6.4 Grouping Plants - [6.4.1 Grouping Plants](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-4-1-grouping-plants.md) - [6.4.2 Flowering Plants](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-4-2-flowering-plants.md) - [6.4.3 Non-Flowering Plants](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-4-3-non-flowering-plants.md) - 6.5 Classification Keys - [6.5.1 Classification Keys](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-5-1-classification-keys.md) - 6.6 Environmental Change - [6.6.1 Positive Impact of Humans on the Environment](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-6-1-positive-impact-of-humans-on-the-environment.md) - [6.6.2 Negative Impact of Humans: Deforestation](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-6-2-negative-impact-of-humans-deforestation.md) - [6.6.3 Negative Impact of Humans: Litter](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-6-3-negative-impact-of-humans-litter.md) - [6.6.4 Negative Impact of Humans: Overpopulation](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/6-6-4-negative-impact-of-humans-overpopulation.md) ### 7 Year 4: Animals, Including Humans - 7.1 Teeth - [7.1.1 Why Do We Need Teeth?](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-1-1-why-do-we-need-teeth.md) - [7.1.2 'Baby' Teeth](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-1-2-baby-teeth.md) - [7.1.3 Adult Teeth](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-1-3-adult-teeth.md) - [7.1.4 Incisors](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-1-4-incisors.md) - [7.1.5 Canines](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-1-5-canines.md) - [7.1.6 Premolars](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-1-6-premolars.md) - [7.1.7 Molars](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-1-7-molars.md) - 7.2 Digestion - [7.2.1 What is Digestion?](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-2-1-what-is-digestion.md) - [7.2.2 The Digestive System - The Mouth](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-2-2-the-digestive-system-the-mouth.md) - [7.2.3 The Digestive System - The Stomach](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-2-3-the-digestive-system-the-stomach.md) - [7.2.4 The Digestive System - The Small Intestines](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-2-4-the-digestive-system-the-small-intestines.md) - [7.2.5 The Digestive System - The Large Intestines](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-2-5-the-digestive-system-the-large-intestines.md) - 7.3 Food Chains - [7.3.1 What are Food Chains?](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-3-1-what-are-food-chains.md) - [7.3.2 Producers, Predators & Prey](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-3-2-producers-predators-and-prey.md) - [7.3.3 Herbivores & Carnivores](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/7-3-3-herbivores-and-carnivores.md) ### 8 Year 4: States of Matter - 8.1 The 3 States of Matter - [8.1.1 States of Matter](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/8-1-1-states-of-matter.md) - [8.1.2 Changes of State](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/8-1-2-changes-of-state.md) - 8.2 The Water Cycle - [8.2.1 The Water Cycle](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/8-2-1-the-water-cycle.md) - [8.2.2 Evaporation at Different Temperatures](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/8-2-2-evaporation-at-different-temperatures.md) ### 9 Year 4: Sound - 9.1 How Do I Hear? - [9.1.1 What is Sound?](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/9-1-1-what-is-sound.md) - [9.1.2 Sound Travels to Your Ear](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/9-1-2-sound-travels-to-your-ear.md) - 9.2 Pitch - [9.2.1 Pitch](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/9-2-1-pitch.md) - 9.3 Volume - [9.3.1 Volume](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/9-3-1-volume.md) - [9.3.2 How Distance Affect Volume](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/9-3-2-how-distance-affect-volume.md) ### 10 Year 4: Electricity - 10.1 Uses of Electricity - [10.1.1 What Uses Electricity?](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/10-1-1-what-uses-electricity.md) - 10.2 Conductors & Insulators - [10.2.1 Electrical Conductors](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/10-2-1-electrical-conductors.md) - [10.2.2 Electrical Insulators](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/10-2-2-electrical-insulators.md) - 10.3 Making Circuits - [10.3.1 What is a Circuit?](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/10-3-1-what-is-a-circuit.md) - [10.3.2 Complete Circuits](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/10-3-2-complete-circuits.md) - [10.3.3 Electrical Safety](https://senecalearning.com/en-gb/revision-notes/primary/science/science-year-3-and-4-national-curriculum/10-3-3-electrical-safety.md)