3.4 Energy In Ecosystems
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8 Terms
What are the feeding stages of a food chain called?
Trophic levels.
What is passed between trophic levels during feeding?
Energy.
How is energy lost from food chains?
Heat, movement and undigested materials.
What proportion of energy is passed onto the next trophic level in a food chain?
10%.
What is a pyramid of numbers?
A diagram showing the number of organisms at each trophic level in a food chain.
What is a pyramid of energy?
A diagram showing the amount of energy at each trophic level of a food chain.
Which type of pyramid can have an unusual or inverted shape?
A pyramid of numbers.
When can a pyramid of numbers have an unusual or inverted shape?
When the food chain has one very large producer or many very small top consumers.