Food Chains, Webs, Pyramids

Front

What is a food web?

Back

A food web is a complex network of interconnected food chains in an ecosystem, showing how different organisms are related through feeding relationships.

Front

If there are 1000 Kcal available in the producers, how much energy is available in the herbivores?

Back

100 Kcal, as only about 10% of energy is transferred from one trophic level to the next.

Front

What do the owl and the weasel compete for in the food web?

Back

They compete for the shrew.

Front

True or False: Consumers on each level of a pyramid only get about 10 percent of the energy that the plants have stored.

Back

True.

Front

What happens to the grass/flowers population if there is a sudden increase in the cricket population?

Back

There would be a decrease in the grass/flowers population.

Front

Define producers in an ecosystem.

Back

Producers are organisms, like plants, that create their own food through photosynthesis and form the base of the food chain.

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 and nutrients from one level to the next.

Front

Explain the 10% rule in ecology.

Back

The 10% rule states that only about 10% of the energy from one trophic level is transferred to the next level, while the rest is lost as heat.

Front

What is the role of herbivores in a food chain?

Back

Herbivores are primary consumers that eat producers (plants) and convert the energy stored in them into a form that can be used by higher trophic levels.

Front

What is a primary consumer?

Back

A primary consumer is an organism that eats producers; they are typically herbivores.