Relaciones Ecológicas

Order the following terms from least to most significant: Biome, biosphere, community, ecosystem, organism, population.

• Organism, population, community, ecosystem, biome, biosphere

• Biosphere, biome, ecosystem, community, population, organism

• Community, population, organism, ecosystem, biome, biosphere

• Ecosystem, biome, biosphere, community, population, organism

Corals and algae benefit from their mutual relationship: everyone wins! This relationship is called:

• Parasitism

• Predation

• Mutualism

• Competition

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NGSS.MS-LS2-2

Both squirrels and bears search for and eat pine nuts. Their relationship is:

• Mutualism

• Competition

• Parasitism

• Commensalism

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NGSS.MS-LS2-2

A mosquito bites you. The mosquito feeds; it bites you. Their relationship is:

• Mutualism

• Commensalism

• Parasitism

• Competition

Bears hunt and eat salmon. Their relationship is called:

• Mutualism

• Predation

• Commensalism

• Parasitism

The maximum number of a specific type of organism that an ecosystem can support is called:

• Carrying capacity

• Population density

• Birth rate

• Death rate

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NGSS.MS-LS2-4

What happens to a population once it has reached its carrying capacity?

• The population continues to grow indefinitely.

• The population stabilizes and fluctuates around the carrying capacity.

• The population decreases rapidly to zero.

• The population doubles.

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NGSS.MS-LS2-4

What are limiting factors, what do they do, and what are some examples of them?

• Factors that increase the population; examples: water and food.

• Factors that decrease the population; examples: predators and diseases.

• Factors that do not affect the population; examples: climate and soil.

• Factors that only affect plants; examples: sunlight and nutrients.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Why do real-life populations not experience indefinite exponential growth?

• Because there is always enough space and resources.

• Because limiting factors control growth.

• Because populations do not have predators.

• Because populations always migrate to new places.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the general relationship between the "prey" curve and the "predator" curve?

• The prey curve is always above the predator curve.

• The predator curve is always above the prey curve.

• Both curves rise and fall in opposite cycles.

• Both curves rise and fall in synchronized cycles.

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NGSS.MS-LS2-3