Basic Ecology

The arrows in a food chain represents

• how oxygen moves between the organisms

• the order in which the decomposers act

• the wastes given off

• the flow of energy

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What is missing from this food web?

• The herbivores

• The bacteria and fungi

• The producers

• The carnivores

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What can you say about this energy pyramid?

• The herbivores will continue to increase

• Energy is flowing down to the algae

• Energy enters at the top level

• This ecosystem is most likely unstable

Tags

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What will happen if two organisms occupy the same niche?

• There will be competition and one organism could die

• The two organisms will learn to live together

• Energy will flow between them

• One will become a herbivore and the other a carnivore

Tags

NGSS.MS-LS2-4

Individuals living in the zone of intolerance will _____.

• thrive

• reproduce

• die

• play the harmonica

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A deceased body was found in the snow this will cause a ​ (a)   insect activity, and in the decomposition process.

• decrease

• increase

• not effect

• speed up

Tags

NGSS.MS-LS2-3

Who is a secondary consumer in the food web above?

• The rabbit

• The mouse

• The snake

• The deer

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What is the role of the decomposers?

• To provide energy to the producers

• To recycle the nutrients back into the soil

• To break down the plants so the herbivores can get energy

• Turn the dead organisms into a biotic factor

Tags

NGSS.MS-LS2-3

Which organism carries out autotrophic nutrition in the diagram?

• The grasshopper

• The frog

• The plants

• The snake

Tags

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Which of the following would happen if all the frogs were removed?

• The cricket population would decrease

• The grasses would increase

• The deer would go extinct

• The hawk population would decrease a bit

Tags

NGSS.MS-LS2-1

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