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science 7
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Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
Decomposers are the _______ of an ecosystem.
Non recyclers
dirty job guys
Recyclers
photosynthesis
2
Which displays the ecosystem's organisms more accurately?
food chain
food web
3
What kind of symbiotic relationship is this?
forensic
parasitic
commensalistic
mutualistic
4
What captures sunlight in an ecosystem?
plants
apple trees
All the above
ferns
5
Which of the following activities will most likely have negative impact on an ecosystem?
Conserving water
Building highways
Planting trees
Protecting forests
6
The living factors in an ecosystem
Abiotic
Unbiotic
Biotic
Rebiotic
7
If one species is removed from an ecosystem, it can affect other ecosystems around the world.
True
False
8
What kind of symbiotic relationship is this?
fantastic
parasitic
commensalistic
mutualistic
9
You might find species of fish and water birds in an __________________ ecosystem.
forest
aquatic
terrestrial
abiotic
10
Which is
most
responsible for recycling dead plants and animals in an ecosystem?
water
bacteria
insects
fish
11
What is necessary for an organism to survive in an ecosystem?
it must be sunny
its specific needs must be met
it must be underwater
it must have heat
12
Advantage of using land resources
pollution
nonrenewable
deforestation
Widely available
13
Which organisms are LEAST numerous in this ecosystem?
flowers and trees
eagles and mountain lions
rabbits and deer
badgers and snakes
14
Which is NOT a role that polar bears play in their ecosystem?
They are top predators.
They are producers.
They are an indicator species.
They are important cultural symbols.
15
Why is the presence of insects in a rain forest ecosystem important?
Insects help keep plant growth under control.
Insects store water needed by other animals.
Insects create energy needed by other animals.
Insects are a foodsource for many organisms in the ecosystem
16
Which ecosystem below is classified as a freshwater ecosystem?
a coral reef
an ocean
an estuary
a lake
17
What type of symbiotic relationship exists between a tree and a bird?
mutualism
parasitism
commensalism
predation
18
If an
ecosystem
becomes unbalanced
it is harder for animals and plants to find food, shelter and to survive.
there will be no change.
animals and plants will thrive.
plants and animals will remain the same.
19
What kind of symbiotic relationship is this?
omnipresent
parasitic
mutualistic
commensalistic
20
The greater the variety of species, the ______________ the ecosystem.
less sustainable
weaker
healthier
less diverse
21
Which organisms would likely have the LARGEST biomass in this ecosystem?
deer, rabbits and squirrels
flowers, fruits, and trees
frogs, badgers and snakes
eagles and mountain lions
22
Study of interactions in ecosystems
Ornithology
Life Science
Ecology
Biology
23
disadvantages of using land resources
deforestation, pollution
dirty, heavy
acidic, limited supply
expensive, hard to transport
24
Commensalism is a symbiotic relationship wherein:
both partners benefit
One partner benefits and the other is harmed.
one partner benefits and the other is not helped or harmed.
25
Interactions in ecosystems can be...
Positive, negative, superlative and neutral
Positive and negative
Positive, negative and neutral
Positive
26
Which is a biotic factor affecting this ecosystem?
pH of rain
vegetation
precipitation
temperature
27
What kind of symbiotic relationship is this?
parasitic
commensalistic
mutualistic
magnificent
28
How does biodiversity affect an ecosystem?
limited interrelationships
doesn't support variety
contributes to sustainability
only affects abiotic factors
29
Mutualism, commensalism, and parasitism are the three types of
symbiotic relationships
competition
prey adaptations
predation
30
Which are examples of non-living parts of an ecosystem?
soil
all of the above
air
water
