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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
soil
B
water
C
pigeons
D
air
2) Land biomes are called
A
aquatic biomes
B
earthly biomes
C
terrestrial biomes
D
surface biomes
3) What can cause an increase in population size?
A
organisms moving into an area
B
organisms moving out of an area
C
organisms dying
D
none of the above
4) Which is a limiting factor?
A
disease
B
all of the above
C
space
D
water
5) The physical place where a population lives is called its
A
hood
B
niche
C
population
D
habitat
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
chemosynthesis
B
hydrosynthesis
C
photosynthesis
D
autosynthesis
9) Which organisms only eat other consumers?
A
herbivores
B
omnivores
C
carnivores
D
detritivores
10) Detritivores are organisms that eat
A
dead plants and animals
B
both producers and consumers
C
only 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 cube
B
food pyramid
C
food web
D
food chain
13) When water vapor is released by plants, it is called
A
evaporation
B
transpiration
C
precipitation
D
condensation
14) Plants release ___ as a waste product of photosynthesis.
A
water vapor
B
oxygen
C
carbon dioxide
D
nitrogen
15) Producers make a food source called
A
chlorophyll
B
chloroplast
C
glucose
D
stomata
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
benefitism
B
parasitism
C
mutualism
D
commensalism
20) Which organisms cannot make their own food and get energy by eating other organisms?
A
producers
B
chemosynthetic organisms
C
none of the above
D
consumers
*select an answer for all questions
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