WorksheetsAquatic biomes
Total questions: 80
Worksheet time: 53mins
What factors determine the organisms that live in different areas of the water?
Water flow, sediment, and pH
Depth, salinity, oxygen, and nutrients
Sunlight, temperature, and precipitation
Temperature, dissolved oxygen, and light
What is the definition of salinity?
The amount of dissolved oxygen in the water
The amount of sunlight that can penetrate the water
The amount of nutrients available in the water
The amount of salts dissolved in the water
What is the difference between a flowing system and a standing system?
Flowing systems exchange gases and nutrients, while standing systems do not
Flowing systems have more sunlight, while standing systems have less
Flowing systems have more organisms, while standing systems have fewer
Flowing systems have higher salinity, while standing systems have lower
Which zone of an aquatic ecosystem contains enough light for photosynthesis?
Benthic Zone
Aphotic Zone
Photic Zone
Euphotic Zone
What is the bottom layer of a body of water called?
Benthic Zone
Euphotic Zone
Photic Zone
Aphotic Zone
What is the main threat to coral reefs?
All of the above
Excess soil runoff
Climate change
Acidification
What are the major types of marine ecosystems?
Marshes, swamps, and mangrove forests
Oceans/bays, estuaries, coastal wetlands, and coral reefs
Tropical rainforests, deserts, and tundra
Lakes, ponds, and rivers
What is ocean acidification?
The pollution of ocean waters by industrial waste
The rising levels of acidity in ocean waters due to excess carbon dioxide
The process of converting ocean water into freshwater
The formation of coral reefs in the ocean
What are the major types of freshwater ecosystems?
Lakes, ponds, and rivers
Oceans, estuaries, and coastal wetlands
Tropical rainforests, deserts, and tundra
Marshes, swamps, and mangrove forests
What is the function of wetlands?
All of the above
To act as filters for pollutants
To provide habitat for rare species
To reduce the likelihood of floods
How does eutrophication affect aquatic ecosystems?
It increases the oxygen levels in the water
It leads to the decline of fish populations
It promotes the growth of coral reefs
It has no significant impact on aquatic life
What role do mangroves play in coastal ecosystems?
They are primarily used for commercial logging
They provide critical habitat for marine life
They contribute to ocean acidification
They decrease the salinity of nearby waters
What is the primary cause of the 'dead zone' phenomenon in aquatic ecosystems?
Introduction of invasive species
Excessive nutrient pollution leading to hypoxia
Overfishing and the depletion of marine species
Global warming and rising sea temperatures
What is the role of phytoplankton in aquatic ecosystems?
They are the primary food source for many marine animals
They increase the salinity of the water
They decrease the oxygen levels in the water
They are responsible for the 'dead zone' phenomenon
What is the impact of overfishing on marine ecosystems?
It leads to an increase in the population of predatory species
It disrupts the food chain and can lead to the extinction of species
It increases the oxygen levels in the water
It has no significant impact on marine life
What is the difference between a lake and a pond?
Lakes are larger and deeper than ponds
Ponds are saltwater bodies, while lakes are freshwater bodies
Lakes have more biodiversity than ponds
Ponds are man-made, while lakes are natural
What are the two main types of aquatic ecosystems?
Desert and tundra ecosystems
Forest and grassland ecosystems
Urban and suburban ecosystems
Freshwater and marine ecosystems
What is the primary difference between freshwater and marine ecosystems?
Temperature
Depth of water
Type of plants
Salt content
What are some examples of freshwater ecosystems?
Lakes, rivers, ponds, and wetlands
Mountains and forests
Oceans and seas
Deserts and tundras
What are the characteristics of coral reef ecosystems?
Low biodiversity, simple food webs, and competitive relationships between corals and algae
Moderate biodiversity, linear food chains, and neutral relationships between corals and algae
No biodiversity, no food webs, and parasitic relationships between corals and algae
High biodiversity, complex food webs, and symbiotic relationships between corals and algae
What are the major threats to coral reef ecosystems?
Deforestation and habitat destruction
The major threats to coral reef ecosystems include climate change, overfishing, pollution, and ocean acidification.
Excessive conservation efforts
Decrease in water temperature
How do human activities impact aquatic ecosystems?
Reducing carbon emissions
Planting more trees
Pollution, overfishing, and habitat destruction
Building more dams
What is overfishing and how does it affect aquatic ecosystems?
Overfishing is the act of catching too many fish at once, which can lead to the depletion of certain fish species and disrupt the balance of the aquatic ecosystem.
Overfishing is the act of catching too many fish at once, but it has no impact on aquatic ecosystems.
Overfishing is the act of releasing too many fish into the aquatic ecosystem, which helps in maintaining the balance.
Overfishing is the act of introducing new fish species into the aquatic ecosystem, which improves biodiversity.
What are invasive species and how do they threaten aquatic ecosystems?
Invasive species are non-native organisms that help native species thrive and coexist peacefully. They have no negative impact on aquatic ecosystems.
Invasive species are non-native organisms that have no impact on the environment, economy, or human health. They do not threaten aquatic ecosystems in any way.
Invasive species are non-native organisms that cause harm to the environment, economy, or human health. They threaten aquatic ecosystems by outcompeting native species, disrupting food chains, and altering habitats.
Invasive species are native organisms that benefit the environment and human health. They threaten aquatic ecosystems by promoting biodiversity and improving habitats.
What are some conservation efforts to preserve aquatic ecosystems?
Reducing pollution, protecting habitats, implementing sustainable fishing practices, and creating marine protected areas
Building more factories near water bodies
Allowing unrestricted fishing
Clearing natural habitats for urban development
Area in a body of water where it is cool and dark and bottom-feeders are located.
Littoral Zone
Benthic Zone
Limnetic Zone
What are some ways in which humans pollute aquatic biomes?
Planting more trees
Reducing carbon emissions
Building more dams
Industrial waste discharge, agricultural runoff, oil spills, and littering
How does overfishing impact aquatic ecosystems?
It has no impact on aquatic ecosystems
It helps to maintain the overall balance of aquatic ecosystems
It can lead to the depletion of fish populations, disrupt food chains, and harm the overall balance of aquatic ecosystems.
It increases fish populations and improves food chains
Explain the concept of eutrophication and its impact on aquatic biomes.
Eutrophication is the process of introducing toxins into a body of water, leading to the growth of beneficial aquatic plants and increased oxygen levels.
Eutrophication is the process where a body of water becomes overly enriched with nutrients, leading to excessive growth of algae and other aquatic plants. This can result in oxygen depletion and harm to aquatic animals.
Eutrophication is the process of removing nutrients from a body of water, leading to a decrease in algae and aquatic plant growth.
Eutrophication has no impact on aquatic biomes and is a natural process that does not harm aquatic animals.
What are some strategies to conserve and protect aquatic biomes from human impact?
Destroying habitats and ecosystems
Increasing pollution and waste disposal
Using more water for industrial purposes
Reducing pollution, conserving water, protecting habitats, and regulating fishing and boating activities
Discuss the impact of plastic pollution on marine life.
Plastic pollution has no impact on marine life
Marine life benefits from plastic pollution
Plastic pollution only affects land animals
Plastic pollution can harm marine life through ingestion, entanglement, and habitat destruction.
How does urbanization affect the quality of water in aquatic biomes?
Urbanization can lead to increased pollution from runoff, sewage, and industrial waste, which can degrade the quality of water in aquatic biomes.
Urbanization reduces the amount of pollutants in aquatic biomes
Urbanization leads to cleaner water in aquatic biomes
Urbanization has no impact on the quality of water in aquatic biomes
Explain the concept of acid rain and its impact on aquatic ecosystems.
Acid rain is a result of excessive fishing in aquatic ecosystems, leading to a decrease in the pH of the water and harming aquatic organisms.
Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. When this acidic precipitation falls into aquatic ecosystems, it can lower the pH of the water, making it harmful for aquatic organisms.
Acid rain is a natural phenomenon caused by the evaporation of water from aquatic ecosystems, leading to an increase in acidity and harming aquatic organisms.
Acid rain is caused by excessive use of sunscreen by humans, which then gets washed into aquatic ecosystems, causing harm to aquatic organisms.
What are some invasive species that have negatively impacted aquatic biomes, and how do they do so?
Goldfish, jellyfish, seaweed
Sharks, dolphins, whales
Turtles, frogs, alligators
Zebra mussels, Asian carp, water hyacinth
Discuss the impact of climate change on aquatic biomes.
Climate change has no impact on aquatic biomes
Aquatic biomes are not affected by rising water temperatures
Changes in precipitation patterns have no effect on aquatic biomes
Climate change can lead to rising water temperatures, ocean acidification, and changes in precipitation patterns, all of which can have significant impacts on aquatic biomes.
How does the use of pesticides and fertilizers impact the health of aquatic ecosystems?
It improves the health of aquatic organisms
It reduces the risk of water pollution
It has no impact on aquatic ecosystems
It can lead to water pollution and harm aquatic organisms.
What does Dissolved Oxygen mean?
How much acid is in the water
How cold the water is
How much hydrogen is in the water
How much oxygen is in the water
Factors that affect dissolved oxygen include
temperature and stream flow.
lack of fish and amphibians.
the amount of carbon dioxide.
Non of the above.
pH is the measurement of
how acidic or basic a solution is.
just the acidity of a solution.
how acidic or basic the atmosphere is.
Non of the above.
pH value of less than 7 is considered to be
polluted.
basic.
like drain cleaner.
acidic.
pH greater than 7 is considered to be
neutral.
basic.
acidic.
polluted.
Cold water holds more dissolved oxygen than warm water.
True
False
In eutrophication, what does 'algal bloom' refer to?
The rapid increase in the number of bacteria
The rapid increase in the number of plants
The rapid decrease in the number of fish
The rapid increase in the amount of nitrates in the river
What is dissolved oxygen?
the amount of oxygen on land
the amount of oxygen dissolved in water
What can cause too many nitrates getting in the water?
fertilizers
sewage
plants
Salinity is...
the amount of salt in the water
the amount of dirt in the water
The amount of salt in a bay increases the closer you get to...
the rivers
the ocean
What is the root cause of eutrophication?
Sediment
Algae Blooms
Pesticides and other chemicals in runoff
Too many nutrients (nitrate and phosphate)
The water's pH can tell us the following things, EXCEPT for:
if there are excess nutrients in the water
if there was a recent acid rain event
how acidic or basic the water is
what organisms are able to survive in that body of water
Why does eutrophication result in dead zones / fish kills?
Nitrate and phosphate are toxic to fish
Algae block sunlight
Algae use up all the excess nutrients
Decomposers that break down dead algae remove oxygen from the water
Which beaker in the image has the highest turbidity?
A
B
C
D
Which beaker in the image has the lowest turbidity?
A
B
C
D
Type of water pollution which comes from a one source.
Point-source pollution
Nonpoint source pollution
both of them
Type of water pollution which come from many sources.
Point-source pollution
Nonpoint source pollution
both of them
Oil spill: Point source or Nonpoint source?
Nonpoint source
Point source
Both of them
Pesticides runoff: A point source or Nonpoint source pollution?
Point source
Nonpoint source
Both of them
Leaking fuel tank: Point source or Nonpoint source?
Point source
Nonpoint source
Both of them
Pollution that comes from MANY different places and is hard to identify its source.
Point
Non-Point
Pollution that comes from a single source
Point
Non-Point
A farmer stores containers of pesticides in the barn and the containers leak
Point
Non-Point
Disposing of paint and other household hazardous materials down the drain, which ends up in a local creek or waterway
Point
Non-Point
Acid Rain
Point
Non-Point
Cattle ranches allow livestock to feed along streams
Point
Non-Point
Which glass contains water with high turbidity?
Glass 1
Glass 2
What is pH?
The property of containing salt
The measure of the amount of oxygen that is dissolved in water
The amount of suspended solids in water
The measurement of the acidity or basicity of water
What is dissolved oxygen?
The property of containing salt
The amount of suspended solids
The measure of the amount of oxygen that is dissolved
Describes how acidic or basic water is
Where are nitrates and phosphates found?
Fertilizer
Manure
Detergent
All of the above
Why are too many nutrients (like nitrates and phosphates) bad for our waters?
Nutrients decrease the pH of the water, causing it to become increasingly acidic
Nutrients change the salinity of the water
Wetlands filter out runoff that may contain nutrients
Nutrients in the water cause too much algae growth, which decrease the level of oxygen in the water
A body of water showed a high turbidity level, high levels of nitrates and phosphates, a pH of 7.5, and low dissolved oxygen levels. Would this body of water be considered healthy?
Yes
No
A test to determine the quantity of all the suspended, colloidal, and dissolved solids in water and it can cause water to be cloudy.
Nitrates
Dissolved oxygen
PH
Total Solids
The majority of aquatic creatures prefer a pH range of 6.5-9.0. If it is too low or high they will die
True
False
This is essential for the survival of fish and other aquatic organisms
Dissolved oxygen
Dissolved nitrogen
Suspended algae
Nitrates
This is the amount of oxygen consumed by bacteria and other microorganisms while they decompose organic matter under aerobic conditions
Chemical oxygen demand
Biochemical oxygen demand
Turbidity
Dissolved oxygen
This bacteria when found in water is a strong indicator of contamination
Fecal coliform
Non pathogenic bacteria
Phytoplanktons
Micro Planktons
A test to determine a physical characteristic that can determine the rate of biochemical reactions in an aquatic environment.
Nitrates
Calcites
Temperature
Ions
Which is a true statement of the diagram above?
As temperature increases dissolved oxygen increases
As temperature decreases dissolved oxygen decreases
As temperature increases dissolved oxygen decreases
Noe of the above
What combination would most likely indicate an unpolluted body of water?
