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10 Energy and biomass in food chains
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- 1What is the source of energy for most communities of living organisms?Radiation from the sun
- 2What do green plants and algae absorb?The small amount of light that reaches them
- 3Which energy transfers occur during photosynthesis? Where is this energy stored?Light energy to chemical energy
In the substances that make up the cells of the plants - 4Why is the mass of living material (biomass) at each stage in a food chain less that it was at the previous stage?Some materials and energy are always lost in the organism's waste materials
Respiration supplies all the energy needs for living processes, including movement. Much of this energy is eventually transformed to the surroundings - 5How can the biomass at each stage be drawn to scale?Pyramid of biomass
- 6How can the efficiency of food production be improved?By reducing the number of stages in a food chain
By restricting energy loss from food animals limiting their movement and by controlling the temperature of their surroundings - 7Are fish stocks in oceans rising or declining?Declining
- 8Why is it important to maintain fish stocks at a level where breeding continues?Certain species may disappear altogether
- 9What two things play important roles in the conservation of fish stocks?Net size
Fishing quotas
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- GCSE (10 Energy and biomass in food chains) Biology Fichas sobre 10 Energy and biomass in food chains, creado por Anisha Rai el 03/05/2016.
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- Anisha Rai
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