Unit 4 Ecosystem Review

Which of the following best defines photosynthesis?

• The process by which water evaporates and forms clouds
• The process by which plants convert light energy into chemical energy
• The process by which animals obtain oxygen from the atmosphere
• The process by which rocks and minerals are weathered over time

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NGSS.MS-LS1-6

How can scientists visualize the flow of energy within food webs?

• Using trophic pyramids
• Using weather patterns
• Using biogeochemical cycles
• Using mathematical equations

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

What is the correct order of trophic levels in a food web?

• Primary Consumers, Secondary Consumers, Producers, Carnivores
• Secondary Consumers, Producers, Primary Consumers, Herbivores
• Producers, Primary Consumers, Secondary Consumers, Carnivores
• Producers, Secondary Consumers, Primary Consumers, Herbivores

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NGSS.MS-LS2-3

How do models help scientists understand ecosystems?

• By visualizing the flow of energy within food webs
• By controlling animal populations
• By altering natural habitats
• By predicting future weather patterns

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NGSS.MS-LS2-3

Which of the following represents the correct order of trophic levels in a food web?

• Primary Consumers, Secondary Consumers, Producers, Carnivores
• Producers, Primary Consumers, Secondary Consumers, Carnivores
• Producers, Secondary Consumers, Primary Consumers, Herbivores
• Secondary Consumers, Producers, Primary Consumers, Herbivores

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NGSS.MS-LS2-3

NGSS.MS-LS2-2

How does energy flow within food webs as organisms are consumed by predators?

• Energy flows in a circular pattern
• Energy flows from predators to prey
• Energy flows from one trophic level to the next
• Energy flows from prey to predators

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NGSS.MS-LS2-3

NGSS.MS-LS2-2

What is the role of nutrient cycling in ecosystems?

• To regulate predator-prey relationships
• To control climate patterns
• To maintain the flow of energy within food webs
• To recycle essential elements for living organisms

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NGSS.MS-LS2-3

How does the carbon cycle contribute to ecosystem sustainability?

• By recycling essential elements
• By disrupting nutrient balance
• By promoting energy loss
• By increasing pollution levels

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NGSS.MS-LS2-3

NGSS.MS-ESS2-1

Which model illustrates the cycling of nutrients in ecosystems?

• Food Chain
• Energy Pyramid
• Carbon Cycle

• Water Cycle

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NGSS.MS-LS2-3

NGSS.MS-ESS2-1

In the Carbon cycle, how is carbon recycled through living organisms?

• By direct consumption of plants by animals
• By atmospheric deposition
• By decomposition of dead organisms
• By evaporation from water bodies

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NGSS.MS-LS2-3