Free Printable Ecosystem Dynamics

Worksheets

Ecosystem Dynamics - 2

Total questions: 11

Worksheet time: 6mins

Name

Class

Date

What is it called when water enters the atmosphere through plant leaves?

transpiration

condensation

evaporation

precipitation

What is burial and decomposition of dead organisms plus pressure creates coal and petroleum

renewable resource cycling

fossil fuel formation

nitrogen deposition

transpiration

Nitrogen is needed to make __________ and ____________.

(SELECT 2 answers)

protein

sugar

fats

nucleic acids (DNA)

How do consumers get nitrogen?

eating plants and animals

taking in nitrates from soil

absorbing it through their skin

taking vitamins

What is it called when certain bacteria turn nitrogen gas into ammonia and then nitrates that plants can absorb?

nitrogen fixation

denitrification

transpiration

cellular respiration

What is it called when certain bacteria turn nitrates into nitrogen gas to go into the atmosphere ?

nitrogen fixation

denitrification

transpiration

cellular respiration

Which is NOT a way that nitrogen compounds are added to the soil?

Decay of dead organisms

Denitrification

Animal waste

Nitrogen-fixation

What is the only process that removes carbon from the atmosphere?

combustion

cellular respiration

photosynthesis

decomposition

What is happening at 1?

respiration: releasing CO2

decomposing CO2 in the soil

photosynthesis: absorbing CO2

turning CO2 from the atmosphere into organic molecules

10.

Identify the cycle pictured.

The Water cycle

The Carbon cycle

The Nitrogen cycle

The Phosphorus cycle

11.

The diagram shows the flow of organic molecules through an ecosystem. What two processes are identified by the labels X and Y?

X : Respiration
Y : Predation

X : Adaptation
Y : Decomposition

X : Fermentation
Y : Nitrogen Fixation

X : Decomposition
Y : Respiration

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Ecosystem Dynamics - 2

Total questions: 11

Worksheet time: 6mins

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