Trophic Level Transfer Efficiency

Front

What is Trophic Level Transfer Efficiency?

Back

The percentage of energy that is transferred from one trophic level to the next in a food chain.

Front

How is Trophic Level Transfer Efficiency calculated?

Back

It is calculated by dividing the energy received by the consumer by the energy available at the previous trophic level, then multiplying by 100.

Front

If a deer receives 650 KCal from apples that contain 5000 KCal, what is the trophic level transfer efficiency?

Back

13%.

Front

What percentage of energy is typically transferred from one trophic level to the next?

Back

Approximately 10%.

Front

If 10,000 KCal of energy is present in grass, how much energy would be expected in lions?

Back

100 KCal.

Front

What do the arrows in a food chain represent?

Back

The transfer of energy.

Front

If 50 KCal of energy is present in tomato plants, how much energy would be expected in spiders?

Back

0.05 KCal.

Front

What is the primary source of energy for most ecosystems?

Back

The sun.

Front

Define primary producers in an ecosystem.

Back

Organisms that produce energy available for consumption, primarily through photosynthesis, such as plants and phytoplankton.

Front

What role do consumers play in an ecosystem?

Back

Consumers obtain energy by eating other organisms.