Which of the following best describes an HAB? Match the habitat with its descrip
ID: 268886 • Letter: W
Question
Which of the following best describes an HAB?
Match the habitat with its description.
mudflat
[ Choose ]
forest of salt-tolerant trees that tolerate both submersion and exposure
soft-bottom substrate that is exposed during low tide; conditions are anoxic, salinity and temperature fluctuate
stable substrate; dense growth of salt-tolerant vegetation, nursery for juvenile fish
murky; nutrient-rich; submerged during low tied
open water
[ Choose ]
forest of salt-tolerant trees that tolerate both submersion and exposure
soft-bottom substrate that is exposed during low tide; conditions are anoxic, salinity and temperature fluctuate
stable substrate; dense growth of salt-tolerant vegetation, nursery for juvenile fish
murky; nutrient-rich; submerged during low tied
salt marsh
[ Choose ]
forest of salt-tolerant trees that tolerate both submersion and exposure
soft-bottom substrate that is exposed during low tide; conditions are anoxic, salinity and temperature fluctuate
stable substrate; dense growth of salt-tolerant vegetation, nursery for juvenile fish
murky; nutrient-rich; submerged during low tied
mangrove
[ Choose ]
forest of salt-tolerant trees that tolerate both submersion and exposure
soft-bottom substrate that is exposed during low tide; conditions are anoxic, salinity and temperature fluctuate
stable substrate; dense growth of salt-tolerant vegetation, nursery for juvenile fish
murky; nutrient-rich; submerged during low tied
Which of the following are examples of fish populations that are being monitored for conservation purposes in the Chesapeake Bay estuary. (Check all that apply)
Match the organism to its description.
anadromous
[ Choose ]
bacteria that can produce food from hydrogen sulfide
organisms that live in the substrate
fish that migrate from salt water to fresh water to spawn
fish that travel down-river to spawn in estuaries
organisms that use nitrogen and phosphorous in food production
organisms that drift on the surface or extend long leaves above the surface to produce food
catadromous
[ Choose ]
bacteria that can produce food from hydrogen sulfide
organisms that live in the substrate
fish that migrate from salt water to fresh water to spawn
fish that travel down-river to spawn in estuaries
organisms that use nitrogen and phosphorous in food production
organisms that drift on the surface or extend long leaves above the surface to produce food
chemosynthetic
[ Choose ]
bacteria that can produce food from hydrogen sulfide
organisms that live in the substrate
fish that migrate from salt water to fresh water to spawn
fish that travel down-river to spawn in estuaries
organisms that use nitrogen and phosphorous in food production
organisms that drift on the surface or extend long leaves above the surface to produce food
infauna
[ Choose ]
bacteria that can produce food from hydrogen sulfide
organisms that live in the substrate
fish that migrate from salt water to fresh water to spawn
fish that travel down-river to spawn in estuaries
organisms that use nitrogen and phosphorous in food production
organisms that drift on the surface or extend long leaves above the surface to produce food
photosynthetic
[ Choose ]
bacteria that can produce food from hydrogen sulfide
organisms that live in the substrate
fish that migrate from salt water to fresh water to spawn
fish that travel down-river to spawn in estuaries
organisms that use nitrogen and phosphorous in food production
organisms that drift on the surface or extend long leaves above the surface to produce food
Which of the following diagrams represents a salt wedge estuary?
Key:
right-to-left arrow is flow of river water
left to right arrow is flow of seawater
green dots show salinity in parts per thousand
Which term applies to organisms that are adapted to changes in salinity?
Explanation / Answer
HAB- Is accelerated bloom of algae. HAB stands for Harmful algal bloom.
Mudflat- When the estuaries bottoms are exposed at low tides mudflats are formed. So the right match is mudflat is a soft-bottom substrate that is exposed during low tide; conditions are anoxic, salinity and temperature fluctuate.
Mangroves are the forest of salt-tolerant trees that tolerate both submersion and exposure. They are halophytes( salt-tolerant trees) and are also adapted to live in harsh coastal areas.
Anadromous- It is a migration which is up rivers from the sea to the spawn. So the right option is fish that migrate from salt water to fresh water to spawn.
catadromous- is a migration which is rivers to the sea and then to the spawn. So the right option is fish that travel down-river to spawn in estuaries.
Chemosynthetic bacteria are those that can produce food from hydrogen sulfide. They oxidize Hydrogen sulfide as a source of energy instead of sunlight.
Eurhaline is the term used for the organisms that are adapted to changes in salinity. They are generally found in brackish waters of estuaries.
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