Question 1

The most important difference between muddy intertidal shores and the mud flats of estuaries:

Accepted Answer

A) Type of substrate. 
B) Variation in salinity. 
C) Amount of light. 
D) Exposure to wave action. 
E) Size of sediment particles. 
A) Type of substrate. 
B) Variation in salinity. 
C) Amount of light. 
D) Exposure to wave action. 
E) Size of sediment particles.

Question 2

The amount of hydrogen sulfide in the sediment increases as the following factors increase except one:

Accepted Answer

A) Oxygen. 
B) Decrease in the space between sediment particles. 
C) Decrease in the size of sediment particles. 
D) Amount of decomposing bacteria. 
E) Amount of detritus. 
A) Oxygen. 
B) Decrease in the space between sediment particles. 
C) Decrease in the size of sediment particles. 
D) Amount of decomposing bacteria. 
E) Amount of detritus.

Question 3

The salt wedge in the water column of an estuary:

Accepted Answer

A) Moves inland as tide moves in. 
B) Is found in shallower water as one moves inland. 
C) Decreases the average salinity of the estuary. 
D) Decreases the distribution of marine organisms along the bottom of the estuary. 
E) Spreads further into the estuary as the flow of freshwater increases. 
A) Moves inland as tide moves in. 
B) Is found in shallower water as one moves inland. 
C) Decreases the average salinity of the estuary. 
D) Decreases the distribution of marine organisms along the bottom of the estuary. 
E) Spreads further into the estuary as the flow of freshwater increases.

Question 4

The zonation of plants in salt marshes is determined mostly by:

Accepted Answer

A) Temperature fluctuations. 
B) Geographical location. 
C) Height of the tide. 
D) Amount of oxygen in sediments. 
E) Detritus in the water. 
A) Temperature fluctuations. 
B) Geographical location. 
C) Height of the tide. 
D) Amount of oxygen in sediments. 
E) Detritus in the water.

Question 5

Large organisms of the mudflats are more likely to be:

Accepted Answer

A) Infauna. 
B) Endofauna. 
C) Epifauna. 
D) Meiofauna. 
E) Midfauna. 
A) Infauna. 
B) Endofauna. 
C) Epifauna. 
D) Meiofauna. 
E) Midfauna.

Question 6

The most common type of substrate in estuaries:

Accepted Answer

A) Mud. 
B) Rock. 
C) Coarse sand. 
D) Fine sand. 
E) None of the choices are correct. 
A) Mud. 
B) Rock. 
C) Coarse sand. 
D) Fine sand. 
E) None of the choices are correct.

Question 7

Zonation in an estuary is made evident by:

Accepted Answer

A) Large number of worms in the mud. 
B) Presence of different species along different horizontal levels in relation to tides. 
C) Tide pools along the mud flats. 
D) Absence of life in black sediments. 
E) High concentration of plants in salt marshes. 
A) Large number of worms in the mud. 
B) Presence of different species along different horizontal levels in relation to tides. 
C) Tide pools along the mud flats. 
D) Absence of life in black sediments. 
E) High concentration of plants in salt marshes.

Question 8

The area of salt marsh just above the mean low tide is most likely to be dominated by:

Accepted Answer

A) Cordgrass. 
B) Salt marsh hay. 
C) Pickleweed. 
D) Rushes. 
E) Salt grass. 
A) Cordgrass. 
B) Salt marsh hay. 
C) Pickleweed. 
D) Rushes. 
E) Salt grass.

Question 9

Most of the primary production on mud flats is due to:

Accepted Answer

A) Diatoms. 
B) Green algae. 
C) Brown algae. 
D) Red algae. 
E) Sulfur bacteria. 
A) Diatoms. 
B) Green algae. 
C) Brown algae. 
D) Red algae. 
E) Sulfur bacteria.

Question 10

Fjords are formed as a result of the:

Accepted Answer

A) Subsidence of land. 
B) Lowering of sea level. 
C) Formation of sand bars and barrier islands. 
D) The coast is cut by a river. 
E) Raising of sea level and glaciation. 
A) Subsidence of land. 
B) Lowering of sea level. 
C) Formation of sand bars and barrier islands. 
D) The coast is cut by a river. 
E) Raising of sea level and glaciation.

The most important difference between muddy intertidal shores and the mud flats of estuaries:

The amount of hydrogen sulfide in the sediment increases as the following factors increase except one:

The salt wedge in the water column of an estuary:

The zonation of plants in salt marshes is determined mostly by:

Large organisms of the mudflats are more likely to be:

The most common type of substrate in estuaries:

Zonation in an estuary is made evident by:

The area of salt marsh just above the mean low tide is most likely to be dominated by:

Most of the primary production on mud flats is due to:

Fjords are formed as a result of the:

The Science of Marine Biology

The Sea Floor

Chemical and Physical Features of Seawater and the World Ocean

Fundamentals of Biology

The Microbial World

Multicellular Primary Producers: Seaweeds and Plants

Marine Animals Without a Backbone

Marine Fishes

Marine Reptiles, Birds, and Mammals

An Introduction to Marine Ecology

Between the Tides

Life on the Continental Shelf

Coral Reefs

Life Near the Surface

The Ocean Depths

Resources From the Sea

The Impact of Humans on the Marine Environment

The Oceans and Human Affairs

Filters

Exam 12: Estuaries: Where Rivers Meet the Sea

The most important difference between muddy intertidal shores and the mud flats of estuaries:

The amount of hydrogen sulfide in the sediment increases as the following factors increase except one:

The salt wedge in the water column of an estuary:

The zonation of plants in salt marshes is determined mostly by:

Large organisms of the mudflats are more likely to be:

The most common type of substrate in estuaries:

Zonation in an estuary is made evident by:

The area of salt marsh just above the mean low tide is most likely to be dominated by:

Most of the primary production on mud flats is due to:

Fjords are formed as a result of the:

The Science of Marine Biology

The Sea Floor

Chemical and Physical Features of Seawater and the World Ocean

Fundamentals of Biology

The Microbial World

Multicellular Primary Producers: Seaweeds and Plants

Marine Animals Without a Backbone

Marine Fishes

Marine Reptiles, Birds, and Mammals

An Introduction to Marine Ecology

Between the Tides

Life on the Continental Shelf

Coral Reefs

Life Near the Surface

The Ocean Depths

Resources From the Sea

The Impact of Humans on the Marine Environment

The Oceans and Human Affairs

Filters