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Q 1/51
Score 0
Which of the following is an abiotic factor in an ecosystem?
30
grass
air
niche
bacteria
Q 2/51
Score 0
Which of the following is a biotic factor in an ecosystem?
30
a rotting log
a large rock
water
temperature
51 questions
Q.
Which of the following is an abiotic factor in an ecosystem?
1
30 sec
Q.
Which of the following is a biotic factor in an ecosystem?
2
30 sec
Q.
What is a habitat?
3
30 sec
Q.
Which of the following correctly lists the levels in an ecosystem from largest to smallest?
4
30 sec
Q.
Which of these is the producer?
5
30 sec
Q.
How much of the energy from one trophic level is transferred to the next?
6
30 sec
Q.
A organism that performs photosynthesis is called
7
30 sec
Q.
Which organism in the food chain is a second-order consumer? Grass → Cricket → Frog → Snake
8
30 sec
Q.
Which of these is a role of plants in the carbon cycle?
9
30 sec
Q.
The process by which bacteria return nitrogen gas to the atmosphere is called
10
30 sec
Q.
Which is the process in which water vapor changes to liquid water?
11
30 sec
Q.
Which of these processes removes carbon dioxide from the atmosphere during the carbon cycle?
12
30 sec
Q.
Which of the following is an abiotic factor for which plants may compete?
13
30 sec
Q.
What is a niche?
14
30 sec
Q.
A group of organisms of the same species living in the same place is a
15
30 sec
Q.
Which of these organisms provide energy, directly or indirectly, to all animals in an ecosystem?
16
30 sec
Q.
All living and nonliving parts of an environment and the interaction among them are called
17
30 sec
Q.
Which of these organism is a producer in a marine ecosystem?
18
30 sec
Q.
Which best determines the number of wolves that can live in an area?
19
30 sec
Q.
What happens to a population and to competition when there is a reduction of living space?
20
30 sec
Q.
Kudzu vines grow by climbing and wrapping around trees. Trees covered by kudzu can die because they are starved of sunlight. What type of relationship exists between the trees?
21
30 sec
Q.
What has the largest amount of energy?
22
30 sec
Q.
If wolves prey on deer for food, what will most likely happen to the deer population if wolves are removed from an area where deer live?
23
30 sec
Q.
Where do plants get most of the energy they need to live and grow?
24
30 sec
Q.
Which of these organisms are least likely to be producers?
25
30 sec
Q.
Which biotic factor would have the greatest impact on the number of rabbits in a meadow?
26
30 sec
Q.
On the Serengeti Plain, zebras eat grass and giraffes eat the leaves at the tops of trees. Which term best describes the relationship between zebras and giraffes?
27
30 sec
Q.
Which correctly describes an event in the carbon cycle?
28
30 sec
Q.
In the carbon cycle, carbon is transferred from animals to plants by which of the following:
29
30 sec
Q.
Within an ecosystem, grasses are most likely to compete with
30
30 sec
Q.
Which of the following is a symbiotic relationship in which both organisms benefit?
31
30 sec
Q.
Which pair of organisms represents a connection between aquatic and terrestrial food webs?
32
30 sec
Q.
A lamprey attaches itself to a larger fish and sucks the fish’s blood. This is an example of
33
30 sec
Q.
Which best describes the importance of nitrogen in the cycling of energy and matter?
34
30 sec
Q.
An association between two organisms in which one benefits and the other derives neither benefit or harm is called
35
30 sec
Q.
The American cancer root is a non-photosynthetic plant that attaches itself to the roots of some oak tree species. The plant obtains nutrients from the roots of the oak tree, while limiting the amount of water the oak tree can absorb. Which term best describes the relationship between the two.
36
30 sec
Q.
The diagram shows an energy pyramid. Which trophic level will be occupied by an insect that feeds on grass and is eaten by a mouse.
37
30 sec
Q.
Some pine roots have an association with Mycorrhizal fungi. The fungi absorb water and minerals, pass them to the plant, and receive carbohydrates in return. What type of relationship exists between the two organisms?
38
30 sec
Q.
The diagram shows a food web. What is the correct order of energy flow in the food web?
39
30 sec
Q.
Which of the following organisms would be at the top of the food chain?
algae → krill → fish → seal
40
30 sec
Q.
_________ is an organism that breaks down dead and decay organisms.
41
30 sec
Q.
The flow of energy from one organism to the next can be represented by
42
30 sec
Q.
Which of the following organisms would possess the most energy in the food chain?
43
30 sec
Q.
A food chain is shown: Grass → Rabbit → Hawk. If the rabbit population decreased due to disease, what will be the result?
44
30 sec
Q.
Which of the following is missing from the food chain below: ? → rabbit → coyote → flea
45
30 sec
Q.
Energy is passed from producers to consumers. This statement best describes an event in
46
30 sec
Q.
Which is an example that shows that water and land food webs can be interconnected?
47
30 sec
Q.
How are mutualism and parasitism different?
48
30 sec
Q.
What would have the greatest long-term impact on reducing the amount of carbon dioxide in the air?
49
30 sec
Q.
What happens to most of the energy as it moves throughout a food web?
50
30 sec
Q.
Which best represents the flow of energy within an aquatic ecosystem?
