Grade 6 Science: Biodiversity and Classification
Free Grade 6 Science unit on Biodiversity and Classification: 10 lessons in order, starting with Biodiversity. Includes practice questions and answer keys.
10 lessons in this unit
Biodiversity
Learn that biodiversity is the variety of living things in a place or on Earth, how scientists measure it by counting species, why high biodiversity makes ecosystems more stable, and survey a school area safely.
Lesson 2Classification of organisms
Learn how scientists sort living things into groups using shared features, how classification has levels from kingdom to species, how binomial (two-part Latin) names avoid confusion, and use a simple key.
Lesson 3Major groups of living things
Learn the five main kingdoms, animals, plants, fungi, protists and bacteria, and compare their key features such as how they get energy, whether they have cells with nuclei and whether they move.
Lesson 4Vertebrates
Learn that vertebrates are animals with backbones, the five groups, fish, amphibians, reptiles, birds and mammals, and the features that separate them such as skin covering, breathing and reproduction.
Lesson 5Invertebrates
Learn that invertebrates lack backbones and make up most animal species, meet main groups such as insects, arachnids, molluscs, crustaceans, worms and cnidarians, and compare features such as legs and body parts.
Lesson 6Flowering and non-flowering plants
Learn to sort plants into flowering plants that make seeds in fruits, conifers that make seeds in cones, and ferns and mosses that reproduce with spores, and name the parts of a flower.
Lesson 7Microorganisms introduction
Learn that microorganisms are living things too small to see without a microscope, including bacteria, viruses (which are not strictly alive), some fungi and protists, and that most are harmless or helpful. Observe using safe methods only, never culturing microbes.
Lesson 8Adaptations
Learn that adaptations are features or behaviours that help organisms survive in their habitat, group them as structural, behavioural and physiological, and explain how natural selection slowly produces them over generations.
Lesson 9Ecosystem relationships
Learn the main relationships in ecosystems: predator and prey, competition, and symbiosis including mutualism and parasitism, and how food webs and balance depend on them.
Lesson 10Biodiversity conservation
Learn why species become endangered, how scientists and communities conserve biodiversity through protected areas, breeding programmes and habitat restoration, and plan a small conservation action.