2296817
Description
Mind Map by Lilac Potato, updated more than 1 year ago
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Created by Lilac Potato
over 9 years ago
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GCSE AQA Biology 1 Energy Transfer, Decay and The Carbon Cycle
- Pyramids of Biomass
- Biomass: Mass
of living material
- Less energy/biomass as
you go up trophic levels
- Mostly pyramid-shaped
- Producer at the bottom
- Producer at the bottom
- Biomass: Mass
of living material
- Energy Transfer
- Energy from Sun -
source of energy for life
Annotations:
- Light energy converted to chemical energy
- Green plants use small % of light in photosynthesis
- Energy stored in cells - animals eat them
- Energy stored in cells - animals eat them
- Respiration supplies energy for movement
- Energy lost to surroundings as heat
Annotations:
- Especially in mammals and birds - have to keep body at constant temp.
- Energy lost to surroundings as heat
- Some material is inedible
and some is lost as waste
- Hardly any food chains
more than 5 levels
Annotations:
- Because so much energy is lost. Therefore, there is not enough left to support more organisms
- Energy from Sun -
source of energy for life
- Decay
- Plants take in elements and pass through food chain
Annotations:
- Like carbon, oxygen, hydrogen and nitrogen
- Elements returned in waste products or when they die
- Materials decay - broken down by microorganisms
Annotations:
- Elements return to soil
- Materials decay - broken down by microorganisms
- Microorganisms work best in warm
& moist conditions with oxygen
- Composting
- Benefits
- Recycles minerals & nutrients
- Reduces landfill
- Reduces production of methane
- Recycles minerals & nutrients
- Benefits
- Composting
- Plants take in elements and pass through food chain
- The Carbon Cycle
- Only 1 arrow coming down - photosynthesis
Annotations:
- Carbon dioxide is removed from atmosphere by green plants, some of the carbon is used to make carbohydrates, fats and proteins in the plants
- Some carbon returned as
carbon dioxide - respiration
Annotations:
- Some carbon moves through food chain to animals
- When plants/animals die, detritus feeders
and microorganisms feed on remains
- These organisms respire
- These organisms respire
- Animals produce waste
Annotations:
- Broken down by detritus feeders and microorganisms
- Useful plant/animal products are burnt (combustion) - releasing carbon dioxide
- Only 1 arrow coming down - photosynthesis
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