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UNIT 6 Test (20-21) : Ecology, Populations, and Human Impact Flashcards | StudBud
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UNIT 6 Test (20-21) : Ecology, Populations, and Human Impact
UNIT 6 Test (20-21) : Ecology, Populations, and Human Impact
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Human Impact Review 17.20 #eoc #review #ecology #environment
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Answers
1
Which would cause the greatest drop in the number of species of organisms living in USA lakes?
Global Warming
Ozone Destruction
Acid Rain
Increased dissolved O2 levels
2
Why are there so few aquatic plants and phytoplankton that live at thebottom zones in the ocean
The ocean floor contains many decomposers
Water is a limiting factor
Most sunlight is absorbed before reaching these levels
The temperature in these zones is extremely low
3
Which of the following would be a result of eutrophication?
increased dissolved oxygen levels
acid rain
global warming
decreased dissolved oxygen levels
4
What is the function of autotrophs in the carbon cycle?
to use oxygen to produce chemical energy
to take in excess water
to use carbon dioxide to produce glucose
to feed on herbivores
5
Which of the following
IS NOT
a result of deforestation?
Reduction of biodiversity
Reduction in pH of lakes because of Acid Rain
Increase in runoff, increasing soil erosion
Atmospheric CO2 levels could rise and cause global warming
6
The greatest biomass, energy , and population is located at which trophic level?
SECONDARY CONSUMERS
PRIMARY CONSUMERS
PRODUCERS
TERTIARY CONSUMERS
7
Which of the following would NOT BE be a limiting factor for an alligator in the Everglades?
Humans taking a picture
Invasion of pythons
A hurricane
Number of fish, snakes, and rabbits
8
Which type of biogeochemical cycle is shown in this picture?
Carbon Cycle
Phosphorus Cycle
Nitrogen Cycle
Water cycle
9
When an environment has reached its carrying capacity, which of the following is true?
Growth & immigration is equal to death & emigration
Growth rate is exponential
Growth & immigration is > death & emigration
Growth & immigration is < death & emigration
10
Which organism would have the greatest negative effect if the WILD CAT were removed?
JACKAL
KITE
RABBIT
LION
11
Which of the following food chains is MOST EFFICIENT?
Zooplankton-Phytoplankton-Small Fish
Algae-Zooplankton-Small Fish-Mackerel
Algae-Zooplankton-Small-Fish-Mackerel-Large Fish
Phytoplankton-Zooplankton-Blue Whale
12
If 20,000 Joules are available for the Producers, how much energy is available for the Tertiary consumers?
2,000 Joules
20 Joules
2 Joules
200 Joules
13
As a result of the predator increasing, what happens to the prey?
It INCREASES
No impact
It DECREASES
Can't tell from the information given
14
A students want's to determine the effect of light on plant growth. What is the INDEPENDENT VARIABLE?
The amount of water given to the plants
The amount of food given to the plants
The concentration of light
The height of the plant
15
Which type of succession is shown in this picture?
Tertiary Succession
Secondary Succession
Pioneer Succession
Primary succession
16
Humans introduce an invasive species of birds. What is the most serious environmental concern?
Native birds may prey on invasive birds.
Invasive birds may breed with native birds.
Invasive birds may outcompete native birds for habitat/food
Native birds may introduce diseases to invasive birds.
17
Which is true about the flow of energy through an ecosystem?
consumers convert radiant energy into chemical energy
producers convert radiant energy into chemical energy
Herbivores are autotrophic through photosynthesis
carnivores are present to feed on producers
18
Which environmental concern is most associated with burning fossil fuels?
ozone layer destruction
decrease in levels of atmospheric carbon dioxide
pollution of ocean waters
global climate change
