Topic 4.2: Energy Flow Flashcards Preview

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Flashcards in Topic 4.2: Energy Flow Deck (6)
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Define trophic level

The position an organism occupies within a feeding sequence is known as a trophic level


Define food chain

A food chain shows the linear feeding relationships between species in a community


Define biomass

Biomass is the total mass of a group of organisms – consisting of the carbon compounds contained in the cells and tissues


Define pyramid of energy

A pyramid of energy is a graphical representation of the amount of energy at each trophic level of a food chain


What are the units for a pyramid of energy?

They are expressed in units of energy per area per time (e.g. kJ m–2 year–1)


Define food web

A food web is a diagram that shows how food chains are linked together into more complex feeding relationships

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