Ecology Test Review

What is an example of a mutualistic relationship in an ecosystem?

• Bees and flowers

• Lions and zebras

• Wolves and rabbits

• Sharks and fish

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NGSS.MS-LS2-2

NGSS.MS-LS2-5

What is the primary source of energy in most ecosystems?

• wind

• water

• fire

• sun

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NGSS.MS-LS1-6

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What is the role of decomposers in an ecosystem?

• Decomposers help plants grow by providing them with nutrients.

• Decomposers produce oxygen through the process of decomposition.

• Decomposers are responsible for pollinating flowers in an ecosystem.

• Decomposers break down dead organic matter and recycle nutrients.

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NGSS.MS-LS2-3

What is the main goal of biodiversity conservation?

• To protect and preserve the variety of life on Earth.

• To prioritize economic development over environmental protection.

• To eliminate all species that are not useful to humans.

• To exploit and use all natural resources for human benefit.

Tags

NGSS.MS-LS2-5

Which statement is an example of how carbon moves through a food chain as part of the carbon cycle? 

•  Producers release carbon dioxide, and consumers take it in. 

• Producers take in carbon dioxide, and consumers release it.

• Producers take in carbon from the soil, and they release it when they decompose.

• Producers release carbon into the soil, and consumers take it in from the soil.

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NGSS.MS-LS2-3

The energy pyramid below shows the energy made available by producers.

Based on the energy flow between trophic levels in an energy pyramid, how much energy would be expected to be found at the secondary consumer level in this pyramid?

• 100 Joules

• 500 Joules

• 1,000 Joules

• 50 Joules

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NGSS.MS-LS2-3

Which statement provides the best explanation for the difference in biomass of organisms found at each trophic level?

• Organisms at higher trophic level have less energy available to them than organism at lower trophic levels.

• Organisms at higher trophic levels require smaller habitats that organisms at lower trophic levels.

• Organisms at lower trophic levels provide less energy than organisms at higher trophic levels.

• Organisms at lower trophic levels outcompete organisms at higher trophic levels.

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NGSS.MS-LS2-1

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After a wheat field is cleared, wild grasses and weeds begin growing. This process is considered —

• primary succession because pioneer species appear 

• primary succession because there are no large trees

• secondary succession because soil is already present

• secondary succession because the field contains inorganic matter

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NGSS.MS-LS2-4

The rabbit in this food web would be considered a:

• Decomposer
• Producer
• Secondary Consumer
• Primary Consumer

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NGSS.MS-LS2-2

If more lions were introduced to the ecosystem

• the amount of hyenas would increase

• the amount of giraffes would decrease

• the amount of zebras would decrease

• the cheetahs would have less competition

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4