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WorksheetsUnit 9: Energy Flow
Total questions: 49
Worksheet time: 35mins
each trophic level can only give 10% of its energy to the next level
50% Rule
100% Rule.
10% Rule
25% Rule
make food for themselves using light energy, carbon dioxide, and water
Autotrophs
the part of the Earth that can support life; includes all living things and the places they are found
a model that shows how the energy available to organisms at each trophic (feeding) level of an ecosystem is decreased
Flow diagram
Energy pyramid
eat other organisms for food
Heterotrophs
a substance that provides nourishment essential for growth and the maintenance of life
nutrients
organisms that eat only plants
Primary Consumer
Tertiary Consumer
Secondary Consumer
organisms that eat primary consumers
organisms that eat secondary consumers
the feeding position of different groups of organisms within all food chains in the biosphere
Trophic Levels
Food levels
Photosynthesis
Carnivore Diet
In the energy pyramid here, which organisms have the most energy available?
Producers
primary consumer
secondary consumer
tertiary consumer
How does all energy enter the biosphere?
solar radiation enters via cellular respiration and supplies energy to the entire biosphere
solar radiation enters via photosynthesis and supplies energy to the entire biosphere
chemical glucose moves via eating
chemical glucose enters via cellular respiration
The consumers that are the top carnivores that eat other carnivores
Tertiary
Secondary
Primary
In the energy pyramid here, which organisms have the LEAST energy available?
Producers
primary consumer
secondary consumer
tertiary consumer
The diagram represents a simple food chain. The arrows in the diagram indicate the
return of chemical substances to the environment
order of importance of the various organisms.
direction of energy flow through a series of organisms
direction in which organisms move in the environment.
What is the primary role of decomposers in an ecosystem?
To compete with herbivores for food
To produce energy through photosynthesis
To break down dead organisms and recycle nutrients
To consume primary producers
Which of the following best describes a food chain?
A group of organisms that share the same habitat
A complex network of interconnected food webs
A linear sequence of organisms through which nutrients and energy pass
A cycle of energy flow between producers and decomposers
In a food web, what is the significance of an organism being at the top of the pyramid?
It is a top predator with no natural enemies
It is a primary consumer
It has the most energy available
It is a primary producer
Ecology is
Which of the following is NOT a way carbon is released into the atmosphere?
What is one way carbon moves from animals back to the environment?
Which process releases carbon dioxide back into the atmosphere?
What role do plants play in the carbon cycle?
process of carbon converting and recycling through the environment and living organisms
Emission Cycle
Carbon Cycle
Water Cycle
Nitrogen Cycle
What is the primary source of energy for producers in an ecosystem?
Minerals
Decomposed matter
Sunlight
Water
Which of the following organisms is most likely to be found at the base of a food chain?
Herbivore
Producer
Carnivore
Decomposer
In an ecosystem, which process is primarily responsible for the conversion of solar energy into chemical energy?
Respiration
Photosynthesis
Decomposition
Combustion
Analyze the food web above. Which animal receives the most energy originally produced by the plants in the food web?
rabbit
frog
owl
snake
Click on the image to make it larger--The rabbit gets energy from the ....
hawk
mouse
wildflowers
grass
How many consumers are in this food chain?
None
One
Three
Four
The chameleon obtains its energy from
the sun
the snake
the caterpillar
the mongoose
The rabbit gets energy from the ....
hawk
mouse
wildflowers
grass
Which organism in the pyramid is the tertiary consumer?
Grass
Frog
Snake
Hawk
What role do producers play in an ecosystem?
They compete with herbivores for food.
They decompose organic matter.
They provide energy for primary consumers.
They are the top predators.
Which of the following is a characteristic of a food web?
It shows a single linear path of energy flow.
It includes only producers and consumers.
It represents multiple interconnected food chains.
It excludes decomposers.
How does energy flow in an ecosystem?
From consumers to decomposers to producers.
From decomposers to producers to consumers.
From consumers to producers to decomposers.
From producers to consumers to decomposers.
