Ecosystem Interactions and Energy Flow Quiz

What is an ecosystem?

• A community of organisms interacting with each other and the nonliving environment

• A single species living in a specific area

• A group of nonliving things in a particular area

• A collection of unrelated organisms

Tags

NGSS.MS-LS2-3

Which of the following is an example of an abiotic factor in an ecosystem?

• Sunlight

• Grass

• Deer

• Trees

What is mutualism in species interactions?

• One species benefits while the other is unaffected

• One species benefits while the other is harmed

• Both species benefit

• Both species are harmed

In a food web, what do the arrows represent?

• Energy flow

• Predator-prey relationships

• Competition

• Symbiotic relationships

Tags

NGSS.MS-LS2-3

What is the 10% energy rule in ecosystems?

• Energy decreases by 10% at each trophic level

• Energy increases by 10% at each trophic level

• Only 10% of energy is transferred to the next trophic level

• Energy is evenly distributed among trophic levels

Tags

NGSS.MS-LS2-3

How does energy flow through an ecosystem?

• It flows from consumers to producers

• It flows from predators to prey

• It flows from decomposers to consumers

• It flows from producers to consumers

Tags

NGSS.MS-LS2-3

Why is biodiversity important to ecosystem health?

• It reduces the number of species in the ecosystem

• It provides resilience to environmental changes

• It decreases stability of the ecosystem

• It increases competition among species

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What happens if keystone species are removed from an ecosystem?

• The biodiversity decreases

• The ecosystem collapses

• The energy flow increases

• The ecosystem becomes more stable

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What is the role of decomposers in matter cycling?

• They produce energy for the ecosystem

• They break down dead organisms and recycle nutrients

• They regulate the population of other organisms

• They provide food for primary consumers

Tags

NGSS.MS-LS2-3

What is the term for the interaction where one species benefits while the other is harmed?

• Mutualism

• Commensalism

• Parasitism

• Symbiosis