
Ecosystem Dynamics: Matter, Energy, and Interactions Among Organisms

Interactive Video
•
Biology, Science, Chemistry
•
6th - 8th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary distinction between organisms and their environment in an ecosystem?
Organisms and the environment are both non-living entities.
Organisms and the environment are both living entities.
Organisms are non-living entities, while the environment consists of living components.
Organisms are living entities, while the environment consists of non-living components.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which process is highlighted as a method for recycling matter in ecosystems?
Cellular respiration
Composting
Photosynthesis
Evaporation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a food web, what do the arrows typically represent?
The direction of energy and matter flow
The growth rate of organisms
The size of organisms
The lifespan of organisms
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main role of decomposers in an ecosystem?
To break down dead material and recycle nutrients
To consume producers
To produce energy from sunlight
To compete with consumers for resources
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of photosynthesis in plants?
To convert sunlight into chemical energy
To release energy from sugars
To decompose organic matter
To absorb oxygen from the environment
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During cellular respiration, what do animals primarily release?
Oxygen and glucose
Nitrogen and oxygen
Carbon dioxide and water
Glucose and nitrogen
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the ten percent rule in ecological pyramids?
Ten percent of matter is lost to the environment.
Only ten percent of energy is transferred to the next trophic level.
Ten percent of organisms are decomposers.
Only ten percent of organisms survive each year.
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