AQA · Biology · 8461
GCSE Biology: Farming techniques
Ecology · AQA GCSE Biology (8461), specification point 4.7.5.2. Cards are generated from the exam board's own specification for "Farming techniques", and every card links back to the page it came from. Separate science only. Specification © AQA — used with attribution.
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How can the efficiency of food production from farm animals be improved?
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By restricting energy transfer from the food animals to the environment, so more energy goes into growth.
Which two intensive-farming techniques reduce energy transfer from food animals to the environment?
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Limiting the animals' movement and controlling the temperature of their surroundings.
Why does limiting the movement of farm animals improve food production efficiency?
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Less energy is used for movement (respiration), so more is available for growth and biomass.
Why does controlling the temperature of farm animals' surroundings improve efficiency?
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Less energy is lost as heat maintaining body temperature, so more goes into growth.
Why are some farm animals fed high-protein foods?
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To increase their growth.
What type of objection do some people raise against modern intensive farming?
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Ethical objections — e.g. concerns about animal welfare when movement is restricted.
Give one advantage of intensive farming techniques.
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Greater efficiency: more food produced from less energy input, so lower cost per unit.
Give one disadvantage of intensive farming techniques.
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Ethical/animal-welfare concerns from restricting movement (also the energy cost of heating enclosures).
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