All the organisms of the same species living in the same place at the same time.
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Define Community
All the populations in a particular habitat (plants and animals).
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Define Ecosystems
A balanced unit consisting of all the living organisms in a habitat plus the non-living parts of the environment(air,water,light).
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What is the top level of the food chain called?
Tertiary consumer
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What are the rules for a fair sample when using a Quadrat?
1.Use random number tables, as coordinates
2.Use a sufficient number of Quadrats for the area size
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What is a pyramid of numbers?
The number of organisms in each trophic level of a food chain.
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What is a pyramid of biomass?
The mass of organisms in each trophic level.
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How do use a Quadrat?
1. Put it down and count number of plants in it
2.Repeat man times
3. Multiple up and take the average
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What are quadrats used for?
Quadrats are used to estimate the size of a plant population in areas that are too big to count.
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How does light energy from the sun enter a food chain?
It enters a food chain when the producers carry out photosynthesis.
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Is the process of light energy from the sun entering the food chain if not why?
No, most of the light energy is never made into chemical energy.
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Where does energy loss take place from the producer to the primary consumer?
1.The whole plant is not eaten (the roots are not)
2.Energy lost in undigested food- faeces
3.Energy lost in urine
4.Heat energy lost in environment
5.Heat energy lost in movement
6.Only some used in growth
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Other cards in this set
Card 2
Front
Define the word population
Back
All the organisms of the same species living in the same place at the same time.
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