Biology
- Created by: spambeth12
- Created on: 24-04-15 21:36
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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
- Photosynthisis
- 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
- Depend on plants
- Terminology
- Plant nutrition
- 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
- Continuous
- Environmental changes put species at risk
- Food chains/ webs
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