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Chapter 9, 7th Grade
Test Description: Interactions of Living Things
Instructions: Answer all questions to get your test result.
1) Which is NOT an abiotic factor?
A
air
B
water
C
soil
D
pigeons
2) Land biomes are called
A
aquatic biomes
B
surface biomes
C
earthly biomes
D
terrestrial biomes
3) What can cause an increase in population size?
A
none of the above
B
organisms moving into an area
C
organisms dying
D
organisms moving out of an area
4) Which is a limiting factor?
A
water
B
all of the above
C
disease
D
space
5) The physical place where a population lives is called its
A
habitat
B
population
C
hood
D
niche
6) Which is an example of a parasitic relationship?
A
a flea and a dog
B
a clownfish and sea anemone
C
a barnacle and a sea turtle
D
a bee and a flower
7) T/F: Energy returns to its source (or cycles) in an ecosystem.
A
False
B
True
8) The process in which organisms use chemicals to make food energy is called
A
photosynthesis
B
chemosynthesis
C
autosynthesis
D
hydrosynthesis
9) Which organisms only eat other consumers?
A
detritivores
B
herbivores
C
omnivores
D
carnivores
10) Detritivores are organisms that eat
A
only consumers
B
dead plants and animals
C
both producers and consumers
D
only producers
11) T/F: Each stage of a food chain has less available food energy than the last one.
A
True
B
False
12) What shows the amount of energy available at each step of a food chain?
A
food chain
B
food cube
C
food pyramid
D
food web
13) When water vapor is released by plants, it is called
A
condensation
B
precipitation
C
transpiration
D
evaporation
14) Plants release ___ as a waste product of photosynthesis.
A
oxygen
B
water vapor
C
nitrogen
D
carbon dioxide
15) Producers make a food source called
A
chloroplast
B
glucose
C
stomata
D
chlorophyll
16) How do humans contribute to the carbon cycle?
A
They breathe out carbon dioxide
B
They burn fossil fuels
C
All of the above.
D
When they decompose, the carbon is returned to the environment.
17) T/F: Environmental changes can be slow or rapid.
A
False
B
True
18) The largest number of individuals of one species that an ecosystem can support over time is called
A
carrying capacity
B
climax community
C
threshold
D
limiting factors
19) A relationship in which two organisms benefit is called
A
parasitism
B
mutualism
C
commensalism
D
benefitism
20) Which organisms cannot make their own food and get energy by eating other organisms?
A
consumers
B
none of the above
C
chemosynthetic organisms
D
producers
*select an answer for all questions
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