Ecosystem and Food Chains Quiz

What is a producer in a food chain?

• An organism that decomposes dead matter.

• An organism that makes its own food.

• An organism that eats other organisms.

• An organism that is a primary consumer.

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

• To decompose dead matter.

• To eat producers.

• To produce food.

• To eat secondary consumers.

In which direction do the arrows in a food chain point?

• Towards the one being eaten.

• Towards the decomposer.

• Towards the producer.

• Towards the one doing the eating.

What percentage of energy is typically stored at each trophic level?

• 10%

• 25%

• 50%

• 100%

What happens if a primary consumer is removed from a food chain?

• Nothing changes.

• Secondary consumers may not have enough to eat.

• Tertiary consumers will become primary consumers.

• Producers will increase.

What is a food web?

• A single food chain.

• A pyramid of energy.

• Multiple food chains interacting together.

• A chain of decomposers.

What does biodiversity refer to?

• The number of food chains in a web.

• The variety of organisms in a given area.

• The number of producers in an area.

• The amount of energy in an ecosystem.

How does biodiversity contribute to the sustainability of an ecosystem?

• By providing multiple food sources for organisms.

• By reducing the number of predators.

• By increasing the energy at each trophic level.

• By eliminating decomposers.

Which has more biodiversity: a food chain or a food web?

• Food chain

• Food web

• Both have equal biodiversity

• Neither has biodiversity

What is the primary benefit of high biodiversity in an ecosystem?

• Increased energy at each trophic level.

• Fewer decomposers.

• Greater resilience to changes.

• More primary consumers.