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