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7th Grade Unit 5 Ecosystems
Test Description: Ecosystems
Instructions: Answer all questions to get your test result.
1) The living factors in an ecosystems are called
A
biotic
B
undead
C
YOLO
D
abiotic
2) The giant salvinia plant in Northwest Louisiana is considered a(n) ____________ species because it is not native to this region.
A
predatory
B
unnatural
C
welcome
D
invasive
3) The variety of living things in an ecosystem refer to it's ______.
A
bioluminescence
B
biweekly
C
abiotic diversity
D
biodiversity
4) Organisms which make their own food are known as ______, while organisms that consume other organisms for energy are called _________.
A
heterozygous; homozygous
B
heterotroughs; autotrophs
C
autotrophs; heterotrophs
D
chefs; diners
5) A symbiotic relationship in which both species benefit is called
A
commensalism
B
mutualism
C
parasitism
D
predatory
6) A biome in which trees lose their leaves the autumn producing very fertile soil is called a _______ biome.
A
enchanted forest
B
conifereous forest
C
rainforest
D
deciduous forest
7) An energy pyramid is used to illustrate organisms and energy at each _________ level.
A
omnivore
B
logistic
C
scavenger
D
tropic
8) In an s-curve, the population starts off in a lag phase, increases exponentially, then levels off when the population reaches its ______.
A
resource capacity
B
carrying capacity
C
commensalism capacity
D
last straw
9) ____________ break down dead organic material while ________ consume the carcasses of dead animals killed by another organism.
A
decomposers; scanvengers
B
scavengers; decomposers
C
scavengers; omnivores
D
decomposers; carnivores
10) A group of organisms of the same species in the same area at the same time is a ________, while all the groups of different species in the same area at the same time is a ______.
A
community; population
B
taco cat spelled backwards is taco cat
C
population; community
D
club; organization
*select an answer for all questions
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