Core Biology Chapter 5 AQA

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Define the term biomass
Mass of living material in plants and animals
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What is a pyramid of biomass
Represents the mass of living organisms at each stage in a food chain
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Why are plants always at the base of the pyramid
Plants start the process of energy transfer in living organisms
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What do green plants transfer
Solar (light) energy to chemical energy which is then passed through the food chain
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Does the biomass increase or decrease compared to the previous stage
Decrease
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What does energy wastage between the stages mean
Not all the energy taken in by organism results in growth
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How do animals keep a constant body temp in terms of the pyramid
Energy from the previous stage is used
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Which process in cells releases energy from food material
Respiration in cells releases energy from food
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What is a detritus feeder and give one example
Worms - I Starts the process of decay by eating dead animals/plants
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What are decay organisms and what is the correct term
Break down the waste or dead animals/plants
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How can you speed up the process of decay
Make the conditions warm and wet
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What does recycling do to the environment
It returns nutrients to the soil
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What do waste vegetables contain
Organic waste which can be recycled
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What is the most effecient way of composting
Allowing waste to be mixed with oxygen and moisture- allows energy to escape by heating the surroundings
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Why do gardeners add worms to compost
To speed up process of decay
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Suggest why councils shred garden waste before putting it into big bins
Smaller pieces have a larger surface area for microorganisms to attack, increase rate of decomposition
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Other cards in this set

Card 2

Front

What is a pyramid of biomass

Back

Represents the mass of living organisms at each stage in a food chain

Card 3

Front

Why are plants always at the base of the pyramid

Back

Preview of the front of card 3

Card 4

Front

What do green plants transfer

Back

Preview of the front of card 4

Card 5

Front

Does the biomass increase or decrease compared to the previous stage

Back

Preview of the front of card 5
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