Unit 7: Ecosystems
Energy in Ecosystems
How is the movement of energy in
an ecosystem modeled?
ecosystem, abiotic, biotic, niche
producer, consumer, decomposer, food webs
Primary, secondary, and tertiary consumers in a
food web.
Energy flows through ecosystems from producers to
consumers.
Draw a food web to show the roles of producers,
consumer, and decomposers in an ecosystem.
In a food web, use arrows to show energy transfer between
organisms.
Identify primary, secondary, and tertiary consumers in a
food web.
Describe the importance of producers, consumers, and
decomposers in ecosystems.
Relationships Among Organisms
How do organisms interact in
nature to survive?
What factors limit the size of a
population?
symbiosis, mutualism, parasitism, commensalism
predation, predator, prey
competition, limiting factors
Identify common examples of symbiotic relationships
including mutualism, parasitism, and commensalism.
Describe the relationship between predator and prey in an
ecosystem.
Identify the impact of limiting factors of native populations
in an ecosystem (food, shelter, water, space, disease,
parasitism, predation, and nesting sites).
Cycles of Nature
How do energy and matter move
through ecosystems?
carbon cycle
Photosynthesis: carbon dioxide + water (in presence
of light) food (glucose) + oxygen.
Cellular respiration: food (glucose) + oxygen
energy + carbon dioxide + water.
Laws of Conservation of Mass and Energy
Energy flows and matter cycles through an
ecosystem.
Process of photosynthesis and cellular respiration
follow the Law of Conservation of Mass.
Construct a scientific model of the carbon cycle to show
how matter and energy are continuously transferred
between organisms and their physical environment.
Describe the process of photosynthesis, such as the roles
of light, carbon dioxide, water, and chlorophyll; production
of food; release of oxygen.
Describe how cellular respiration breaks down food to
provide energy and release carbon dioxide.
Cite evidence that living systems follow the Laws of
Conservation of Mass and Energy.
How is the movement of energy in
an ecosystem modeled?
ecosystem, abiotic, biotic, niche
producer, consumer, decomposer, food webs
Primary, secondary, and tertiary consumers in a
food web.
Energy flows through ecosystems from producers to
consumers.
Draw a food web to show the roles of producers,
consumer, and decomposers in an ecosystem.
In a food web, use arrows to show energy transfer between
organisms.
Identify primary, secondary, and tertiary consumers in a
food web.
Describe the importance of producers, consumers, and
decomposers in ecosystems.
Relationships Among Organisms
How do organisms interact in
nature to survive?
What factors limit the size of a
population?
symbiosis, mutualism, parasitism, commensalism
predation, predator, prey
competition, limiting factors
Identify common examples of symbiotic relationships
including mutualism, parasitism, and commensalism.
Describe the relationship between predator and prey in an
ecosystem.
Identify the impact of limiting factors of native populations
in an ecosystem (food, shelter, water, space, disease,
parasitism, predation, and nesting sites).
Cycles of Nature
How do energy and matter move
through ecosystems?
carbon cycle
Photosynthesis: carbon dioxide + water (in presence
of light) food (glucose) + oxygen.
Cellular respiration: food (glucose) + oxygen
energy + carbon dioxide + water.
Laws of Conservation of Mass and Energy
Energy flows and matter cycles through an
ecosystem.
Process of photosynthesis and cellular respiration
follow the Law of Conservation of Mass.
Construct a scientific model of the carbon cycle to show
how matter and energy are continuously transferred
between organisms and their physical environment.
Describe the process of photosynthesis, such as the roles
of light, carbon dioxide, water, and chlorophyll; production
of food; release of oxygen.
Describe how cellular respiration breaks down food to
provide energy and release carbon dioxide.
Cite evidence that living systems follow the Laws of
Conservation of Mass and Energy.
Vocabulary