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Ecology Unit Test Review Flashcards | StudBud
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Ecology Unit Test Review
Ecology Unit Test Review
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Review for ecology. Includes energy flow,cycles, populations, humans in environment.
Flashcards
40 cards
F
Practice quiz
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Host live
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Questions
40
Answers
1
Biosphere--ecosystem--___________--population--organism
species
community
cells
biome
2
Photosynthetic algae would be an example of a
consumer
decomposer
producer
parasite
3
In an ecosystem, which type of organism receives energy from every other level?
consumers
Producers
predators
decomposers
4
Which of the following is NOT abiotic?
air
plants
temperature
nitrogen
5
Biotic factors are _________; abiotic factors are _________
living, nonliving
nonliving, cells
nonliving, living
living, physical
6
Energy is measure in
kilograms
biomass
calories
watts
7
Biodiversity is often threatened due to
human behaviors
habitat destruction
all of the above
invasive species
8
On an energy pyramid, organisms feed on the level
directly above them
directly below them
they are at
any level they want
9
Which of the following is NOT a population?
all the birds in San Diego
all the grass frogs in a pond
all the blue jays in Corona, CA
all the black bears in Yosemite
10
A ___________ is a series of interrelated food chains within an ecosystem.
food chain
energy chain
food web
ecosystem
11
A __________ is a group of organisms that can breed and produce _________offspring.
population, fertile
species, fertile
species, living
species, healthy
12
Currently, if you graphed human population, the graph would show
exponential growth
population stability
declining growth
logistical growth
13
One organism benefits, the other is neither harmed nor helped.
mutualism
symbiosis
commensalism
parasitism
14
A population grows when
death rate is higher than birth rate
birth rate is greater than the death rate
emigration is greater than immigration
birth rate is equal to death rate
15
When an organism dies, the Nitrogen in its body
remains stuck in the body forever
is buried and becomes a fossil fuel
is released through decomposition
is quickly released to the atmosphere
16
A forest that contains 25 different plant species is __ than a forest with 55 plant species.
less biodiverse
smaller
larger
more biodiverse
17
As a population reaches carrying capacity there will be more competition for
food
mates
space
all of the above
18
A group of organisms of the same species living in the same area is called
a pioneer species
a community
a population
an ecosystem
19
Fossil fuels are
formed from the decayed remains of organisms
used by bacteria
part of the water cycle
part of the nitrogen cycle
20
_______________ is leaving a population, ___________ is entering a population.
immigration, emigration
emigration, immigration
emigration, births
immigration, births
21
Organic material in an ecosystem is called
living
ecomass
trophic level
biomass
22
How much energy is transferred from one trophic level to the next?
100%
50%
90%
10%
23
Species do not use or occupy all parts of their habitat at once; the parts they do use is the
biosphere
niche
biome
habitat
24
________ is the study of the interaction of living organisms and the physical environment.
biology
environmental science
oceanography
ecology
25
Carrying capacity is
huh??
strength of the population
the size of a population
the environments limit on the size of a population
26
The base level of an energy pyramid is composed of
consumers
predators
producers
decomposers
27
How much mercury is passed from one organism to the next?
0%
100%
90%
10%
28
Nitrogen is an important part of
carbohydrates
proteins
water
fats
29
The flow of energy can be modeled with a
food chain
food diagram
flow chart
energy diagram
30
If the coyote population suddenly increased what would happen to the rabbit population?
It would increase
It would stay the same
No idea
It would decrease
31
_____________ is the variety of species of life in an area.
ecology
biology
interdependence
biodiversity
32
Both organisms benefit from the activity of each other
mutualism
symbiosis
predation
commensalism
33
Why does the rabbit population level off over time?
Predators keep the numbers down
The environment doesn't have resources to support more.
Rabbits succumb to disease when there are too many.
They stopped having babies--who wants more kids anyway?
34
Which organism is a primary consumer?
Weasel
Plant
Owl
Grasshopper
35
Which of the following can effect population size?
disease
all of the above
habitat destruction
invasive species
36
All organisms within an ecosystem somehow rely on one another this is called
interconnectedness
biogeochemical cycling
ecology
isolation
37
A population will grow
when emigration exceeds immigration
when births and deaths are equal
when there is no disease or predators
when the birth rate exceeds the death rate
38
Evaporation, precipitation, and transpiration are part of the
life cycle
nitrogen cycle
carbon cycle
water cycle
39
Which of the following is NOT part of the nitrogen cycle?
photosynthesis
Conversion of atmospheric nitrogen by bacteria
nitrogen fixation
precipitation
40
What often occurs when organisms must share the same space and food?
competition
primary succession
secondary succession
symbiosis
