WorksheetsUnit 2 Test Review - Environmental Systems
Total questions: 76
Worksheet time: 3600secs
A non-native or alien species in an ecosystem is referred to as
endangered
invasive
threatened
pioneer
Invasive species are
always harmful
sometimes harmful
always beneficial
sometimes beneficial
Invasive species can be harmful by
competing for resources with native species
causing erosion in a habitat
decreasing the availability of food
increasing the availability of food
The biosphere can be described as
the accumulation of all ecosystems on Earth
the accumulation of all the water on Earth
All of the land on Earth
All of the air on Earth
The Endangered Species Act
protects organisms at risk for becoming extinct
makes sure all endangered animals are in zoos
allows for poaching of endangered species
allows people to buy endangered species
Zebra Mussels are invading the lakes of North Texas due to
they evade being caught from people fishing
being consumed by fish there
habitat loss
improper cleaning of boats
Nitrogen fixation
changes nitrogen into a form usable by plants
releases nitrogen gas into the atmosphere
changes atmospheric nitrogen into ammonia which is further converted
fixes all the ammonia in the soil
In an energy pyramid, only _____ % of the secondary consumer's energy is passed to the tertiary consumer.
3
90
10
65
Sunlight is the main energy source for
producers
consumers
heterotrophs
detrivores
What might happen to the consumers if mice went extinct
the primary consumer will have to find an alternative food source.
the primary consumer population would increase
the tertiary consumer population would decrease
the tertiary consumer will need to find an alternative food source
Niche:
a weird habitat
a particular species
the role of a species in an environment
the ability to reproduce n an environment
Habitat:
physical location of an ecosystem in which a species lives
regular tendency or practice
same as community
same as population
Ecosystem:
a species job
the air we breathe
community of living organisms
community of nonliving components
Biodiversity measures the number of species living within a(n)
population
community
niche
ecosystem
The image best represents
symbiosis
succession
a habitat
an ecosystem
Decomposers:
break down nutrients when animals die
break down nutrients when plants die
eat dead waste from organisms
get energy from the sun
All are part of the water cycle except
precipitation
evaporation
transpiration
denitrification
Photosynthesis is part of the carbon cycle where
it moves carbon from the atmosphere into plants
it move oxygen from the atmosphere into plants
carbon dioxide is released into the atmosphere
carbon monoxide poisoning occurs
The form of nitrogen most usable to plants is
ammonium
nitrates
nitrogen gas
ammonia
The energy that is not passed onto the next trophic level is used by the organism to eat, move and reproduce or is released into the atmosphere as heat.
True
False
What term is used to describe the phenomenon that occurs when an ecosystem is destroyed either by natural or human causes and then, over time, replenishes itself
invasion
succession
niche
habitat
Considering the energy pyramid, why is a pyramid the shape used to represent energy flow?
As you track the flow of energy, more energy is available at each trophic level
As you track the flow of energy, more organisms can be supported by the available energy at each trophic level
As you track the flow of energy, less energy is available at each trophic level
grass -> rabbit --> snake --> hawk
In the food chain above what is the hawk?
secondary consumer
tertiary consumer
primary consumer
producer
Why are food chains so short, rarely going higher than through 4-5 organisms instead of 8 or more trophic levels?
There are just not enough animals present in ecosystems for really long food chains
The number of species available for consumption is very limited in most ecosystems.
There is too little energy left at higher trophic levels to make consumption worthwhile.
The digestive systems of carnivores cannot handle foods in a widely varied diet.
All of the following are abiotic factors of a habitat except
soil
plants
weather
water
A relationship between a producer and a consumer is best represented by a
snake eating a bird
zebra eating grass
lion eating a zebra
fox eating a mouse
In an energy pyramid, at what level is the most usable energy available?
primary consumer
producer
secondary consumer
tertiary consumer
quaternary consumer
plants --> aphids --> spiders --> sparrows
In the food chain above, the spiders are
secondary consumers
tertiary consumers
producers
primary consumers
When life begins to arrive in an ecosystem for the FIRST time, this is called
primary succession
secondary succession
replenishing
reviving
Which process uses oxygen and releases carbon dioxide as a waste product?
burning fossil fuels
photosynthesis
respiration
plate tectonics
Condensation and transpiration are important components of the
water cycle
nitrogen cycle
biogeochemical cycles
all of the above
What is lost to the environment at each of the trophic levels of this ecosystem?
food sources
living space for the organisms
nutrients from the soil
heat
The table lists four groups of factors found in a particular ecosystem. Which group consists of only abiotic factors?
group 1
group 2
group 3
group 4
Biodiversity
population and abiotic factors in an area
number of different species in an area
job or role of an organism
place where an organism lives
Ammonification—converting nitrogen to
ammonium through decomposition
true
false
Denitrification—conversion of nitrates into nitrogen gas by bacteria
true
false
"Carbon sink" from the carbon cycle is the parts of the environment that take in CO2 from the atmosphere, the main natural carbon sinks are plants, the ocean and soil.
True
False
Phosphorous cycle—main pathway into soil is erosion, different than other cycles because it is not in atmosphere.
true
false
An organism that causes harm to another has what type of symbiotic relationship?
parasitic
commensalistic
mutualistic
________ species which come into and live in an area that is not their native habitat. They can
disrupt food webs/chains, take the niches of other organisms, cause disease or
destruction in the ecosystem.
native
invasive
endangered
threatened
Biomagnification is the increase in concentration of a substance as it moves up the
food chain. Organisms at higher trophic levels are most at risk.
True
False
the act of capturing and consuming another organism
predation
symbiosis
parasitism
commensalism
a general term to describe any close, long-term relationship between two different species
biomass
pollination
symbiosis
meiosis
a symbiotic relationship where one organism benefits while the other is harmed
predation
commensalism
parasitism
mutualism
a symbiotic relationship where one organism benefits while the other is unaffected
commensalism
predation
parasitism
mutualism
a symbiotic relationship where both organisms benefit
commensalism
mutualism
parasitism
predation
an interaction where two organisms fight over the same resource, such as food, shelter, or a mate
commensalism
competition
predation
parasitism
Example: mistletoe feeds off a tree, sucking the water and nutrients away from the tree
parasitism
commensalism
predation
mutualism
Which cycle are fossil fuels (oil, coal, natural gas) part of?
carbon
water
nitrogen
phosphorus
What is the process of rain, snow, or hail falling from the sky?
evaporation
condensation
precipitation
runoff
What is a fitting description for this diagram?
The Mayfly is a food source for which 3 organisms?
The Mayfly is a food source for which 3 organisms?
Which organisms in the diagram have the most energy to give to other organisms?
Cattails and Marsh Grass
Hawks and Snakes
Crickets and Grasshoppers
Shrews and Frogs
If there are 47,802 calories (energy) available at the producer level of this food chain, how many calories would be available at the tertiary consumer level?
47.802
478.02
4.7802
0
In this food chain, the snake would be a
tertiary consumer
secondary consumer
primary consumer
producer
Which one of the following questions should I ask an environmental scientist if I was trying to discover what type of consumer (herbivore, carnivore, omnivore,etc.) a kangaroo is?
What do they eat?
Where do they live?
Are they mammals?
How much do they eat?
