#1 Independent Practice: Flow of Energy & Matter in Ecosystems

Front

What percentage of original chemical energy produced by tomato plants is present in the aphid population?

Back

Approximately 10%.

Front

What happens to the amount of energy transmitted in the food chain from one link to another?

Back

It decreases each time.

Front

If 15 kcal of energy are available in the tertiary consumers, how much energy was originally generated by the producers?

Back

15,000 kcal.

Front

If there is 5,000 kg of biomass in the algae population, how many kg of mass would be expected in the fish population?

Back

5 kg.

Front

Each level of the food chain is called a ________ level.

Back

Trophic.

Front

What is the primary source of energy for ecosystems?

Back

The Sun.

Front

Define 'trophic level'.

Back

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

Front

What is the role of producers in an ecosystem?

Back

Producers convert solar energy into chemical energy through photosynthesis.

Front

What is the energy transfer efficiency between trophic levels?

Back

Typically around 10%.

Front

What is a food web?

Back

A food web is a complex network of feeding relationships among organisms in an ecosystem.