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  • Biology
    • Food chains/ webs
      • Plant nutrition
        • Photosynthisis
          • Chemical process in every green plant. Produces food (glucose) in the leaves, helping growth
          • Chlorophyll absorbes sunlight, uses energy to convert CO2 and H2O into glucose, oxygen is also produced
            • Carbon dioxide + Water ----> Glucose + Oxygen
          • Leaves are adapted
            • Broad - big surface area
            • Chlorophyll found in the chloroplasts near the top of the leaf
            • Stomata- tiny holes on the underside of the leaves allow C2O to move between leaf cells
            • Contain a network of veins- deliver water to leaf cells and take away glucose
      • Ecosystems
        • Depend on plants
          • Energy from sun > Plants make and store ‘organic molecules’ storing the energy passed to animals
          • Release O2 and take in CO2
          • Plants depend on insects to pollinate
      • Terminology
    • Survival and species, Adaptation and Competition
      • Nucleus in cells contains chromosomes or long coiled lengths of DNA
      • A gene is a short section of  DNA  which control hair colour eye colour etc
      • Work in pairs with a dominant
      • Characteristic features: Skin colour, height, flower size
        • Continuous
          • Height, weight, skin colour, leaf area etc
        • Discontinuous
          • Colour of courgette
          • Blood group
      • Environmental changes put species at risk


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