Food chains & Pyramids

Front

What is a food chain?

Back

A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another in an ecosystem, starting from producers to various levels of consumers.

Front

What is a trophic level?

Back

A trophic level is a position in a food chain or food web that indicates the organism's role in the flow of energy and nutrients, such as producers, primary consumers, secondary consumers, and tertiary consumers.

Front

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

Back

10%.

Front

What is a primary consumer?

Back

A primary consumer is an organism that eats producers (plants) and is typically herbivorous, such as a grasshopper.

Front

What is a secondary consumer?

Back

A secondary consumer is an organism that eats primary consumers; they can be carnivorous or omnivorous.

Front

What is a tertiary consumer?

Back

A tertiary consumer is an organism that eats secondary consumers, often at the top of the food chain, such as a hawk.

Front

What is the role of producers in a food chain?

Back

Producers, such as plants, convert sunlight into energy through photosynthesis and form the base of the food chain.

Front

What is the ultimate source of energy for living things?

Back

The Sun.

Front

How much energy is available to herbivores if there are 1000 Kcal in producers?

Back

100 Kcal.

Front

What is a food pyramid?

Back

A food pyramid is a graphical representation that shows the distribution of energy and biomass among different trophic levels in an ecosystem.