ECOLOGY PART 2 | Science - Quizizz

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ECOLOGY PART 2

6th - 8th grade

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Slide 1
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ECOLOGY PART 2
Energy Flow In Ecosystems
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Slide 2
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How Energy Flows
Energy flows through an ecosystems in one direction
Starting with the sun or chemical compounds
Then to autotrophs(producers)
Then to various heterotrophs(consumers)
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Question 3
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Q.
What are autotrophs
answer choices
organisms that produce their own food
producers
organisms that consume what they eat
consumers
<p>organisms that produce their own food</p>
alternatives
<p>producers</p>
<p>organisms that consume what they eat</p>
<p>consumers</p>
answer explanation
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Question 4
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Q.
Where does the energy flow start in an ecosystem?
answer choices
autotrophs
heterotrophs
the sun
<p>autotrophs</p>
alternatives
<p>heterotrophs</p>
<p>the sun</p>
answer explanation
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Slide 5
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Food Chains
Food chains show how matter and energy move through ecosystems in a series of steps
Each step shows which organisms transfer energy by eating and being eaten
The arrows show who is being transferred the energy (who is doing the eating)
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Slide 6
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Food Chains
Each organisms in a food chain represents a feeding step, or trophic level, in the transfer of matter and energy
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Question 7
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Q.
Food chains show you what?
answer choices
What organisms like to do
How organisms grow and reproduce
how matter and energy move through ecosystems
<p>What organisms like to do</p>
alternatives
<p>How organisms grow and reproduce</p>
<p>how matter and energy move through ecosystems</p>
answer explanation
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Slide 8
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Slide 9
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Food Webs
Models that show all possible feeding relationships at each trophic level in a community; links all food chains in an ecosystem together.
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Slide 10
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Slide 11
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Trophic Levels
Notice that producers are always on the bottom of the energy pyramid
We call consumers on the first level Primary Consumers
We call consumers on the next level Secondary Consumers
We call consumers on the next level Tertiary Consumers
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Question 12
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Q.
What is always on the bottom level of energy pryamid?
answer choices
primary consumers
secondary consumers
autotrophs (producers)
heterotrophs (consumers)
<p>primary consumers</p>
alternatives
<p>secondary consumers</p>
<p>autotrophs (producers)</p>
<p>heterotrophs (consumers)</p>
answer explanation
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Question 13
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What do we call consumers that consume autotrophs (producers)?
answer choices
Primary Consumers
Secondary Consumers
Tertiary Consumers
<p>Primary Consumers</p>
alternatives
<p>Secondary Consumers</p>
<p>Tertiary Consumers</p>
answer explanation
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Slide 14
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Trophic Levels
Energy is passed up a food chain or food web from lower to higher trophic levels.
Generally only about 10% of the energy at one level is available to the next level.
The rest of the energy is used for metabolic process or given off as heat to the environment.
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Slide 15
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Question 16
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Q.
How much energy is transferred to the next trophic level?
answer choices
10%
90%
<p>10%</p>
alternatives
<p>90%</p>
answer explanation
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Question 17
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What happens to 90% of the energy in each trophic level?
answer choices
It turns into chemical energy
It is lost as heat.
It is used for metabolic processes
All of the energy is used and none of it moves to another level
<p>It turns into chemical energy</p>
alternatives
<p>It is lost as heat.</p>
<p>It is used for metabolic processes</p>
<p>All of the energy is used and none of it moves to another level</p>
answer explanation
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