Karteikarten
Decomposing
Karten in diesem Stapel (10)
- 1Detritivoreseat dead and decaying matter
main role is toincrease the surface area of decaying matter so that decomposers can act more quickly, completing breakdown - 2Types of detritivoresEarthworms - dead leaves
Maggots - animal tissue
Woodlice - wood - 3DecomposersMicroorganisms which breakdown the organic molecules in dead organisms and their waste
main decomposers are bacteria and fungi - 4Sacrophytic NutritionBacteria and fungi chemically break down organic material using enzymes. They then absorb the simple molecules through their cell surfaces. This makes them sacrophytes and this type of feeding is called Sacrophytic Nutrition
- 5Releasing NutrientsThe soluble nutrients are absorbed by the decomposers back into their bodies, and used for growth and as an energy store. Many fungi and bacteria are eaten by other organisms resulting in the nutrients being passed on
- 6DecompositionOrganisms contain elements that need to be returned to the soil or air so that they can be used by new plants. These elements are returned to the environment in waste products by organisms or when the organism dies
- 7Rate of decompositionOxygen availability/aerobic conditions
Temperature
Water Content - 8Oxygen availabilityDecomposers need oxygen for aerobic respiration so rate of decomposition is faster in an area in which there is plenty of oxygen
Some decomposers respire anaerobically but this transfers less energy meaning the rate will be slow - 9TemperatureDecomposers contain enzymes which digest waste material therefore decomposers work best in warm conditions up until a certain point
- 10Water contentDecomposers need water to survive therefore rate is increased in moist conditions and these conditions allow the simple chemicals to dissolve well so diffusion is much faster.
Waterlogged soils wouldn't work as they don't have enough oxygen
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- Year 10 Biology Karteikarten am Decomposing, erstellt von Janki S am 19/11/2017.
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- Janki S
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