Have an account?
Skip to Content
Build your own quiz
25 questions
Show Answers
See Preview
- 1. Multiple Choice
Which of the following is not an environmental function of wetlands?
increasing runoff
absorbing and removing pollutants from water
trapping carbon that would otherwise be released into the air
controlling floods
- 2. Multiple Choice
Estuaries are very productive ecosystems because they receive fresh nutrients from
lakes and ponds
rivers and oceans
marshes and swamps
streams and springs
- 3. Multiple Choice
What causes most coastal pollution in the United States?
overfishing
temperature changes
industrial waste and sewage
lakes and ponds
- 4. Multiple Choice
Swamps are commonly found on
rocky hillsides
flat, poorly drained land
forest clearings
bottoms of ponds or lakes
- 5. Multiple Choice
The majority of marine organisms are found in
deep ocean waters
shallow, coastal waters
fisheries
none of the above
- 6. Multiple Choice
As they flow down a mountain to flatter ground, rivers generally become
wider
warmer
slower
all of the above
- 7. Multiple Choice
Which of the following statements is not correct?
Lakes may contain a region that receives little sunlight.
Wetlands help remove pollutants from water.
Swamps are dominated by woody shrubs and water-loving trees.
Rivers generally move faster, and their oxygen levels decrease, as they near the ocean.
- 8. Multiple Choice
Threats to ocean ecosystems are
nutrient runoff and industrial waste discharges.
overfishing and entanglement of marine mammals in trawl nets.
sewage and algal blooms.
All of the above
- 9. Multiple Choice
The types of organisms found in a pond or lake depend on
the amount of sunlight available
the temperature of the water
the presence of nutrients
All of the above
- 10. Multiple Choice
In the _____ zone, life is diverse and abundant.
benthic
eutrophic
littoral
plankton
- 11. Multiple Choice
In the _____ zone, the water is cool and dark.
benthic
eutrophic
littoral
plankton
- 12. Multiple Choice
What mainly distinguishes nekton from benthos?
One lives in a freshwater ecosystem and the other lives in salty water
One swims freely and the other often lives attached to a hard surface
One is a predator and the other is a primary producer
All of the above
- 13. Multiple Choice
Estuaries
are always saltwater ecosystems
are always freshwater ecosystems
are ecosystems where both fresh water and salt water are present
prevent the development of salt marshes
- 14. Multiple Choice
Which organism produces most of the food in an aquatic ecosystem?
fish
barnacles
phytoplankton
zooplankton
- 15. Multiple Choice
The arrangement of organisms in the open ocean is determined by the
increase in salt content from shallow to deep waters
size of the benthic zone, where photosynthesis occurs
amount of nutrients and sunlight that are available
distribution of zooplankton
- 16. Multiple Choice
Which of the following is not characteristic of wetlands?
Wetlands have plentiful nutrients and the capacity for photosynthesis
Wetlands are limited to inland freshwater environments
Wetlands are perceived historically as disease-infested wastelands
Wetlands have varied populations of plants and animals
- 17. Multiple Choice
An estuary functions as a mineral trap due to
its great depth and particularly sticky sediment
the mixing action of river water and ocean water
its storing of pesticides from agricultural runoff
the filtering action of bottom-feeding fish species
- 18. Multiple Choice
Coral reefs are intricately shaped rocklike structures that are formed as a result of
volcanic activity that is common in tropical marine environments
the gradual accumulation and fusion of skeletons of bony fish
the secretion of calcium carbonate by tiny marine animals
minerals that are washed from land ecosystems and build up
- 19. Multiple Choice
What are the two main types of freshwater wetlands?
lakes and ponds
rivers and streams
littoral zones and benthic zones
marshes and swamps
- 20. Multiple Choice
Which of the following is not characteristic of salt marshes and mangrove swamps?
Both provide habitats for wildlife
Both are dominated by marsh grasses
Both are found along coastal areas
Both are threatened by development
- 21. Multiple Choice
Which ecosystem has the highest level of salinity?
salt marsh
river
pond
swamp
- 22. Multiple Choice
Which of the following is a threat to coral reefs?
oil spills
sewage
pesticides
all of the above
- 23. Multiple Choice
Why doesn’t photosynthesis occur in deep ocean water?
The water temperature is too cold
There is no sunlight
There are not enough nutrients
The salinity level of the water is too high
- 24. Multiple Choice
Fish are a type of _____, or free-swimming, organisms.
plankton
nekton
benthos
littoral
- 25. Multiple Choice
Marshes are dominated by ________ plants while swamps contain mainly ________ plants.
tall, short
short, tall
nonwoody, woody
woody, nonwoody
- Answer choicesTagsAnswer choicesTags