Question 1

Why are estuarine environments ideal locations for the development of juveniles of many species of marine animals?

Accepted Answer

The answer of Why are estuarine environments ideal locations for...

Question 2

Match the primary producer with its most closely associated herbivore.
-Thalassia

Accepted Answer

Thalassia is a seagrass and the primary food source for green turtles. Soft-shell clams are filter feeders and waterfowl may feed on a variety of aquatic plants and animals.

Question 3

Considering that species diversity in estuaries is limited by constant changes in salinity, temperature, and water movement, where, vertically, in an estuary would one expect to find the greatest species diversity? The least species diversity?

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Question 4

How does temperature-driven vertical turnover occur, and what is its importance?

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Question 5

Match the genus with its most closely associated common name.
-Green algae

Accepted Answer

Ulva is commonly known as sea lettuce and belongs to the green algae family. Mya and Urosalpinx are genera of mollusks.

Question 6

Match the genus with its most closely associated common name.
-Soft-shelled clam

Accepted Answer

Soft-shelled clams are most commonly known as Mya clams.

B and C are not associated with soft-shelled clams. Urosalpinx is a genus of predatory sea snails, while Ulva is a genus of green algae.

Question 7

Define the following terms:

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 ...

Question 8

Oyster reefs are usually oriented at right angles to the currents in estuaries. How do you think this could be an advantage to the oysters living in this community?

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Question 9

What horizontal part of an estuary would you expect to show the greatest species diversity?

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Question 10

Match the primary producer with its most closely associated herbivore.
-Zostera

Accepted Answer

Waterfowl are the most closely associated herbivores with Zostera, which is a type of seagrass. Waterfowl, such as ducks and geese, often feed on seagrass in coastal and marine environments.

Question 11

Match the species with its most closely associated salinity concentration type.
-Osmoregulator

Accepted Answer

Osmoregulators, like hermit crabs, actively regulate their internal salt concentration regardless of the external environment, allowing them to maintain a constant internal environment.

Question 12

Match the primary producer with its most closely associated herbivore.
-Diatoms

Accepted Answer

Soft-shell clams are filter feeders that consume diatoms from the water column.

Question 13

Match the genus with its most closely associated common name.
-Oyster drill

Accepted Answer

The common name "oyster drill" is most closely associated with the genus Urosalpinx, which is a predatory marine snail that feeds on oysters. The other two choices, Mya and Ulva, are not typically referred to as oyster drills.

Question 14

What properties of estuaries make them highly productive areas?

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Question 15

Define the following terms:

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 ...

Question 16

Match the species with its most closely associated salinity concentration type.
-Osmoconformer

Accepted Answer

Tunicates are osmoconformers, meaning they maintain their internal salinity concentration at the same level as the surrounding seawater. Nereis polychaetes and hermit crabs are not typically osmoconformers.

Question 17

Even though estuaries support large numbers of organisms, there are relatively few numbers of species that live in estuaries. Why is this the case?

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The answer of Even though estuaries support large numbers of...

Question 18

Match the species with its most closely associated salinity concentration type.
-Both osmoconformer and osmoregulator

Accepted Answer

Nereis polychaetes have been shown to be both osmoconformers and osmoregulators, capable of adjusting their internal salinity levels to match their external environment.

Answer: B) 
 Tunicates are primarily osmoconformers, meaning their internal salinity levels match their external environment, but some species have been found to also have limited osmoregulatory abilities.

Answer: C) 
 Hermit crabs are primarily osmoregulators, actively adjusting their internal salinity levels to maintain proper balance.

Question 19

Outline 3 human uses of estuaries that impact their ecology.

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Question 20

Describe the difference between an osmoregulator and an osmoconformer.

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Quiz 14: Estuaries

Why are estuarine environments ideal locations for the development of juveniles of many species of marine animals?

Match the primary producer with its most closely associated herbivore. -Thalassia

Considering that species diversity in estuaries is limited by constant changes in salinity, temperature, and water movement, where, vertically, in an estuary would one expect to find the greatest species diversity? The least species diversity?

How does temperature-driven vertical turnover occur, and what is its importance?

Match the genus with its most closely associated common name. -Green algae

Match the genus with its most closely associated common name. -Soft-shelled clam

Define the following terms:

Oyster reefs are usually oriented at right angles to the currents in estuaries. How do you think this could be an advantage to the oysters living in this community?

What horizontal part of an estuary would you expect to show the greatest species diversity?

Match the primary producer with its most closely associated herbivore. -Zostera

Match the species with its most closely associated salinity concentration type. -Osmoregulator

Match the primary producer with its most closely associated herbivore. -Diatoms

Match the genus with its most closely associated common name. -Oyster drill

What properties of estuaries make them highly productive areas?

Define the following terms:

Match the species with its most closely associated salinity concentration type. -Osmoconformer

Even though estuaries support large numbers of organisms, there are relatively few numbers of species that live in estuaries. Why is this the case?

Match the species with its most closely associated salinity concentration type. -Both osmoconformer and osmoregulator

Outline 3 human uses of estuaries that impact their ecology.

Describe the difference between an osmoregulator and an osmoconformer.