Producer, Consumer, Decomposer? You decide…
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Transcript of Producer, Consumer, Decomposer? You decide…
Producer, Consumer, Decomposer? You decide…
AlgaeCats Grass Cows
MushroomsFlowers Birds Fish
Worms Houseplants Fungi
Butterflies
Humans
Cactus
Mould
Trees Bacteria
Learning objectives:All of you should be able to:Describe the role of producers, consumers and
decomposersIdentify the word equations for photosynthesis
and respiration
Most of you should be able to:Describe photosynthesis and respiration in terms
of inputs, outputs, processes and transformations.Explain the role of producers, consumers and
decomposers
In pairs: come up with a definition for the following terms and write them down
Producers (autotrophs)
Consumers (heterotrophs)
Decomposers
Organisms that convert sunlight energy into chemical energy. Manufacture their own food from inorganic substances.
Obtain their energy by eating other organisms. Feed on autotrophs or other heterotrophs.
Obtain their food and nutrients from the breakdown of dead organic matter (DOM).
Their role in the ecosystem…Producers?
Consumers?
Decomposers?
Producers? Their role in the ecosystem…
• The basis of ecosystems supporting them through constant input of energy and new biomass.
• It is this biomass that provides the total theoretical energy available to all non photosynthesizing organisms in the ecosystem.
Their role in the ecosystem…Consumers?
• Cannot make their own food.
• Herbivores feed on autotrophs and carnivores on other heterotrophs.
• By eating other organisms they gain both food as energy supply and nutrient molecules from within the biomass ingested.
• Convert organic compounds into inorganic.
Their role in the ecosystem…Decomposers?• Waste managers of any ecosystem
• When they break down tissue, they release nutrients ready for reabsorption.
• They improve nutrient retention capacity in the soil.
• Can you remember the two types of decomposers and what they do?
Two processes control the flow of energy through ecosystems…What are they?
Photosynthesis
Respiration
PhotosynthesisLabel the diagram:
• Carbon Dioxide
• Glucose• Oxygen• Water
Chloroplast
PhotosynthesisSummarise photosynthesis in terms of the
following:
What are the…InputsOutputsProcessesTransformations
Inputs
Outputs
ProcessesChlorophyll traps sunlightThe energy is used to split water moleculesHydrogen from water is combined with
carbon dioxide to produce glucose
Transformations
Light Energy Chemical Energy
Can you write the word equation for photosynthesis?carbon dioxide + water glucose + oxygen
Light energy
Chlorophyll
6CO2 + 6H2O C6H12O6 + 6O2
Light energy
Chlorophyll
Inputs of Water, Carbon Dioxide and Sunlight Light energy is trapped by the
chlorophyll inside the chloroplasts
Energy is released by splitting water into
hydrogen and oxygen
Oxygen is released to the atmosphere
The hydrogen combines with carbon dioxide to make
glucose.
Photosynthesis
Respiration
1.
2.
3.
4.
Label the diagram:• Glucose• Oxygen• Carbon Dioxide• Energy
RespirationSummarise respiration in terms of the
following:InputsOutputsProcessesTransformations
Inputs
Glucose
Oxygen from the atmosphere
OutputsHeat energy out
Carbon Dioxide and water
ProcessesOxidation processes inside cells.
RespirationStored chemical energy kinetic energy and heat
Can you write the word equation for respiration?oxygen + glucose energy + water +
carbon dioxide6O2 + C6H12O6 energy + 6H2O + 6CO2
ActivityIn pairs:Create a poster about the two metabolic
processes, respiration and photosynthesis.
It needs to include the following aspects:Information about the inputs, outputs,
processes and transformationsA diagram summarising these different aspectsThe word equations