APES 1.11

What is a food chain?

• A sequence of organisms each dependent on the next as a source of food

• A model of an interlocking pattern of food chains

• A group of organisms that share the same habitat

• A network of interconnected food webs

Which of the following best describes a food web?

• A single linear sequence of organisms

• A model of an interlocking pattern of food chains

• A group of organisms that share the same habitat

• A network of interconnected ecosystems

Tags

NGSS.MS-LS2-3

Identify the primary producers in a food chain.

• Herbivores

• Carnivores

• Plants

• Decomposers

What role do decomposers play in a food web?

• They produce energy for primary consumers

• They break down dead organisms and recycle nutrients

• They are the top predators in the food web

• They compete with primary producers for sunlight

Tags

NGSS.MS-LS2-3

Explain how the removal of a species can affect a food web.

• It has no effect on the food web

• It can lead to the collapse of the food web

• It only affects the species directly above it in the food chain

• It can cause a chain reaction affecting multiple species

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NGSS.MS-LS2-3

NGSS.MS-LS2-4

How do positive feedback loops influence food webs?

• They stabilize the food web by reducing species diversity

• They amplify changes and can lead to rapid shifts in the ecosystem

• They have no impact on food webs

• They decrease the energy flow in the food web

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NGSS.MS-LS2-3

NGSS.MS-LS2-4

Describe the impact of negative feedback loops in a food web.

• They destabilize the food web by increasing species diversity

• They counteract changes and help maintain stability in the ecosystem

• They have no impact on food webs

• They increase the energy flow in the food web

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Analyze the effect of introducing a new predator into an existing food web.

• It will have no effect on the food web

• It may reduce the population of prey species and alter the balance of the ecosystem

• It will only affect the primary producers

• It will increase the population of all species in the food web

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-2

Evaluate the consequences of removing a top predator from a food web.

• It will have no effect on the food web

• It may lead to an increase in the population of prey species, causing overgrazing or depletion of resources

• It will only affect the primary producers

• It will decrease the population of all species in the food web

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-2

NGSS.MS-LS2-1

What is the primary source of energy for most food chains?

• The sun

• Decomposers

• Herbivores

• Carnivores

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6