Ecology Summative - Acc

Earthworms are observed in a microhabitat in a schoolyard. Why are earthworms and other decomposers an essential part of a healthy ecosystem?

• Decomposers are a necessary part of the diet of most consumers.

• Decomposers convert plant material into a form that primary consumers can use.

• Decomposers recycle matter making it available to producers by breaking down waste materials.

• Decomposers extract energy from sunlight as they break down plant materials, returning energy to the system.

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NGSS.MS-LS2-3

Which of these best describes what the food chain represents?

• How an organism might change over time

• The movement of organisms throughout the ecosystem

• The increase in size among organisms in the ecosystem

• The path of energy transfer from producers to consumers

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

How do consumers get the energy they need to function?

• Consumers obtain all of their energy by eating other organisms.

• Consumers obtain some energy from other organisms and some from sunlight.

• Consumers obtain most of their energy by absorbing it from their environments.

• Consumers convert light energy from the sun into chemical energy stored in food.

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NGSS.MS-LS2-3

The first organism in a food chain is always a ________.

• consumer

• carnivore

• herbivore

• producer

What type of consumer is the impala?

• herbivore

• omnivore

• carnivore

• decomposer

According to this food web, how many consumers are herbivores?

• 2

• 3

• 4

• 5

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NGSS.MS-LS2-2

What may happen if the snowshoe hare was removed from the food web pictured?

• The weasels in the habitat would increase fewer hawks would eat them.

• The red squirrel population would decrease because more would be eaten by lynx.

• The blueberry bush population would decrease because more would be eaten.

• Great horned owls would die due to no food source.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

The diagram represents different levels of a marine food pyramid. Between which two levels is the greatest amount of energy transferred

• R and Q
• S and R
• T and S
• U and T

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NGSS.MS-LS2-3

If the organisms in this ecosystem were arranged in an energy pyramid, which organism would receive the least amount of total energy available?

• coyote

• insect

• lizard

• shrub

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

How do biodiversity and stability work together?

• The lower the biodiversity the greater the stability of an ecosystem.

• The higher the biodiversity, the less stable the ecosystem

• The higher the biodiversity, the greater the stability of the ecosystem.

• Biodiversity has nothing to do with ecosystem stability.

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NGSS.MS-ESS3-4

NGSS.MS-LS2-5