B1 Energy in Biomass

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  • Created by: KAustria
  • Created on: 04-06-14 22:36
What is Biomass?
The mass of living material in plants and animals
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What do pyramids of biomass show?
Represents the mass of organisms at each stage in a food chain. I may be accurate than a pyramid of numbers.
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What do green plants transfer solar energy to?
It is transferred to chemical energy which is then passed through the food chain.
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What does it mean is there is energy wastage between each stage of a food chain?
Thsi means that not all of the energy taken in by the organism is used for growth.
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What is undigest energy stored as?
faeces or as urea in urine
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Why is that the more an organism moves the less energy is available there is for growth?
This is because the biomass is used for respiration which releases energy for living processes including movement.
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How else is energy from respiration use?
1. control body temperature 2. transferred to the surroundings.
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How can yo present the movement of energy in animals?
Through Sankey diagrams
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How come nutrients do not run out?
Organisms take up nutrients and when they die, they release these nutrients as they decay.
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What are detritus feeders?
For example. May start the process of decay by eating dead animals and plants and producing waste materials.
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What do decay organisms do?
They microorganisms and are known as decomposers. They break down the waste or dead plants and animals. They need oxygen and work faster in wet and warm conditions.
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How can humans rturn nutrients back to the ground?
Recycle waste in sewage treatment plants and compost heaps.
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what two chemical processes are involved in the recycling of carbon?
1. Photosynthesis 2. respiration
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How is carbon removed from the atmosphere?
1. Photosynthesis 2. Dissolved in oceans
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How is Carbon returned to the atmosphere?
1. Respiration 2. Cutting and burning of trees 3. Animals build up carbon by eating plants, when they die they decay and microorganisms return carbon 4. combustion
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How can organic waste be composted?
1. Allow waste to mix with oxygen and moisture 2. Add worms and soil to compostes to speed up the process.
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Suggest why councils shred garden waste before putting it into big bins?
Smaller pieces have a large surface areas for microorganisms to act on. This increases the rate of decomposition
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Other cards in this set

Card 2

Front

What do pyramids of biomass show?

Back

Represents the mass of organisms at each stage in a food chain. I may be accurate than a pyramid of numbers.

Card 3

Front

What do green plants transfer solar energy to?

Back

Preview of the front of card 3

Card 4

Front

What does it mean is there is energy wastage between each stage of a food chain?

Back

Preview of the front of card 4

Card 5

Front

What is undigest energy stored as?

Back

Preview of the front of card 5
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