10% rule

Front

What is the 10% rule in an energy pyramid?

Back

As you go from one level to the next, only 10% of the energy is transferred to the next level.

Front

How much energy is typically lost as heat when moving up an energy pyramid?

Back

90% of the energy is lost as heat.

Front

What is a producer in an ecosystem?

Back

An organism that can make its own food, such as algae.

Front

What is a tertiary consumer?

Back

An organism that eats secondary consumers or below in the food chain.

Front

What happens to energy as it moves up the trophic levels?

Back

Energy decreases as it moves up the trophic levels.

Front

If a plant has 1000 units of energy, how much energy is available to the primary consumer?

Back

100 units of energy (10% of 1000).

Front

What is a trophic level?

Back

A trophic level is a position in a food chain or food web, representing the flow of energy.

Front

What is the role of herbivores in an energy pyramid?

Back

Herbivores are primary consumers that eat producers.

Front

How does energy transfer affect the population of organisms at different trophic levels?

Back

Higher trophic levels have fewer organisms due to less available energy.

Front

What is the significance of the 10% rule in ecology?

Back

It helps explain the energy efficiency and population dynamics in ecosystems.