Ecosystems and Food Webs Quiz

What is a producer in a food chain?

• An organism that is a primary consumer

• An organism that eats other organisms

• An organism that is an autotroph and can make its own food

• An organism that is a decomposer

What is the role of a primary consumer in a food chain?

• It eats the producer

• It is a decomposer

• It is an autotroph and can make its own food

• It eats other organisms

What happens to the energy as it moves up the trophic levels in a food chain?

• It becomes undigested

• It remains the same

• It decreases

• It increases

What is the purpose of an energy pyramid in a food chain?

• To show the interactions among organisms

• To illustrate the flow of energy through trophic levels

• To display the variety of organisms in an ecosystem

• To demonstrate the role of decomposers

What is a food web made up of?

• A single food chain with multiple producers

• A single food chain with multiple consumers

• Multiple food chains that interact together

• A single food chain with multiple decomposers

What does biodiversity refer to in an ecosystem?

• The interactions among different trophic levels

• The number of producers in the food web

• The variety of organisms living in a given area

• The amount of energy stored in trophic levels

How does high biodiversity contribute to the sustainability of an ecosystem?

• It makes the ecosystem more resilient to changes

• It decreases the interactions among different trophic levels

• It reduces the number of organisms in the food web

• It increases the amount of energy stored in trophic levels

What is the role of decomposers in an ecosystem?

• To break down dead organisms and recycle nutrients

• To make their own food as autotrophs

• To store energy in trophic levels

• To eat other organisms in the food web

What happens if a predator is removed from a food web?

• It has no effect on the other organisms in the food web

• It causes an excessive population of prey

• It leads to an increase in the number of decomposers

• It disrupts the balance of the food web

Why is it important to protect ecosystem biodiversity?

• To increase the number of predators in the food web

• To decrease the interactions among different trophic levels

• To prevent the role of decomposers in the ecosystem

• To prevent detrimental effects on the organisms in the food web