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Populations And Communities Part 1
Test Description: Part 1
Instructions: Answer all questions to get your test result.
1) The struggle between organisms to survive as they attempt to use the same limited resource.
A
mutualism
B
adaptations
C
competition
D
predation
2) All the members of one species in a particular area.
A
community
B
mutualism
C
population
D
predation
3) The nonliving parts of an ecosystem.
A
limiting factors
B
predation
C
abiotic factors
D
biotic factors
4) A symbiotic relationship in which both species benefit.
A
mutualism
B
predation
C
parasitism
D
commensalism
5) The largest population that an environment can support.
A
adaptation
B
limiting factor
C
comunity
D
carrying capacity
6) The community of organisms that live in an area, along with their nonliving surroundings.
A
species
B
ecosystem
C
population
D
community
7) A group of organisms that are physically similar and can reproduce with each other to produce fertile offspring.
A
population
B
ecosystem
C
species
D
community
8) Environmental conditions that prevent populations from increasing.
A
biotic factors
B
adaptations
C
abiotic factors
D
limiting factors
9) A symbiotic relationship in which one species benefits and the other species is neither helped nor harmed.
A
predation
B
parasitism
C
commensalism
D
mutualism
10) All the different populations that live together in an area.
A
community
B
ecosystem
C
species
D
population
11) The living parts of an ecosystem.
A
abiotic factors
B
biotic factors
C
adaptations
D
limiting factors
12) Behaviors and physical characteristics of species that allow them to live successfully in their environment.
A
limiting factors
B
adaptations
C
abiotic factors
D
biotic factors
13) An interaction in which one organism kills and eats another organism.
A
commensalism
B
parasitism
C
predation
D
mutualism
14) If a population is very large or spread out, ecologists use the ____ method to estimate the population size.
A
counting
B
sampling
C
guessing
D
tabulating
15) All the different species living in an area form a ______.
A
family
B
community
C
population
D
ecosystem
16) An organism's specific role in its habitat is called its ____.
A
name
B
right
C
niche
D
livelyhood
17) Every organism has a variety of ____ that enable it to live successfully in its environment.
A
adaptations
B
habitats
C
niches
D
styles
18) Water, sunlight, and oxygen are examples of ____ factors in ecosystems.
A
limiting
B
carrying
C
biotic
D
abiotic
19) Students counted 75 sand crabs in a 5-meter by 3-meter section of a beach. What was the population density of sand crabs in that section?
A
75/15= 5 so the population density is 5 crabs per square meter
B
75/5= 15 so the population density is 15 crabs per square meter
C
75/8=9.375 so the population density is 9.375 crabs per square meter
D
75/3= 25 so the population density is 25 crabs per square meter
20) The entire beach measures 60 meters by 30 meters. Estimate the total population of sand crabs on the entire beach.
A
60*30=1800*5=9,000 so 9,000 crabs.
B
60*30=1800*9.375=16,875 so 16,875 crabs.
C
60*30=1800*25=27,000 so 27,000 crabs.
D
60*30=1800*15=45,000 so 45,000 crabs.
*select an answer for all questions
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