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Circle Of Life
Test Description: How does energy (matter) flow in an ecosystem.
Instructions: Answer all questions to get your test result.
1) What do food webs show?
A
How organisms are related to each other
B
The flow of energy between organisms
C
Where organisms live
D
What organisms eat
2) Which of the following is a true statement?
A
Decomposers can only be plants not animals
B
Decomposers release nutrients from dead material back in to the soil
C
Scavengers release nutrients from dead materials back into the soil
D
Scavengers can only be plants and animals
3) Which is the correct equation for respiration?
A
carbon dioxide + water + sunlight = glucose + oxygen
B
oxygen + water + sunlight = ATP + carbon dioxide
C
carbon dioxide + water = sunlight + glucose + oxygen
D
oxygen + water+ glucose = ATP + carbon dioxide
4) Where does all the energy in a food chain/ web come from?
A
Sunlight
B
Producers
C
Decomposers
D
Consumers
5) If a population of predators decreases, then the population of the prey will?
A
descrease
B
increase
C
stay the same
6) Grass - Grasshopper-Large mouth bass- human What role does the human play in this food chain?
A
Decomposer
B
Scavenger
C
Tertiary Consumer
D
Secondary Consumer
7) Which of the following would most likely increase the carrying capacity of a forest ecosystem for a population of deer?
A
Drought
B
Less shelter
C
More food
D
Forest fire
8) How do plants store their energy?
A
They store it as water.
B
They store it as sugar.
C
They store it as starch.
D
They store it as oxygen.
9) Which of the following is evidence that population growth is affected by the availability of resources in an environment?
A
Bird populations increase when worm populations increase.
B
Rabbits reproduce when the weather is warm
C
Caterpillars die out when plants reproduce.
D
Frog populations increase when ponds dry out
10) Dogs are closely related to whales because
A
both animals have open digestive systems and complex respiratory systems.
B
both animals have open circulatory systems and respiratory system containing lungs.
C
both animals have a closed cirulatory system and respiratory systems containing lungs.
D
both animals have closed disgestive systems and open respiratory systems.
11) Where does the energy that a plant needs come from?
A
The plants make its energy from water and minerals.
B
The energy comes from the oxygen in the air into the plant
C
The plant makes its own energy from water and carbon dioxide
D
The energy comes from the sun.
*select an answer for all questions
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