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WorksheetsMatter and Energy in Ecosystems Elevate Science Topic 9
Total questions: 21
Worksheet time: 11mins
What is the primary source of energy for most ecosystems?
Wind
The Sun
Geothermal heat
Hydroelectric power
Which of the following is an example of a producer in a food chain?
Lion
Grass
Mushroom
Wolf
What do we call an organism that eats only plants?
Carnivore
Omnivore
Herbivore
Decomposer
In a food chain, what is the role of a decomposer?
To produce energy from sunlight
To eat other animals
To break down dead organisms
To provide oxygen
Which of the following best describes the flow of energy in an ecosystem?
It flows from consumers to producers
It is recycled by decomposers
It flows from producers to consumers to decomposers
It remains constant at all levels
How does human activity most commonly affect food webs?
By introducing new species
By increasing biodiversity
By reducing pollution
By altering habitats
What happens to energy as it moves up a food chain?
It increases
It decreases
It stays the same
It is stored
If something is biotic it is
the way energy flows in an ecosystem
a nonliving part of an ecosystem
a living part of an ecosystem
the way it affects something else in an ecosystem
Which of the following is a consequence of a change in an ecosystem?
Increased energy flow
Unchanged food chains
Altered population sizes
Stable climate conditions
Which shows how matter and energy flow from one organism to another?
Food Web
Food diagram
Trophic Levels
Food Chain
What role do plants play in the carbon cycle?
They release carbon dioxide
They store carbon dioxide
They are not involved in the carbon cycle
They take in (consume) carbon dioxide
Which of the following best describes a food web?
A linear sequence of who eats whom
A single pathway of energy flow
A interconnected network of food chains
A group of primary consumers
What is the primary function of consumers in an ecosystem?
To produce energy
To consume other organisms
To decompose organic material
To photosynthesize
What occurs when organizms in an ecosystem need the same resources
Succession
Stability
Competition
Transfer
What is a likely effect of removing a top predator from an ecosystem?
Decrease in plant life
Increase in primary consumers
Decrease in decomposers
Stability in the ecosystem
Which of the following organisms is a primary consumer?
Hawk
Snake
Rabbit
Fox
What typically happens to an ecosystem when it experiences a significant change in its balance?
Species adapt immediately
There is no effect on the ecosystem
Species migration or die-off
Increased plant growth
This means to move through a series of steps that repeat
competition
cycle
transfer
succession
Organisms that are too small to see are called
consumers
microbes
decomposers
producers
All the living and nonliving components in a particular area are a(an)
cycle
trophic level
succession
ecosystem
All the organisms living together in an ecosystem make up a
ecosystem
community
trophic level
producer
