Question 1

Primary productivity in estuaries is high because ____.

Accepted Answer

A) light is seasonal and dim 
B) nutrients are abundant 
C) there is no saltwater 
D) there are no primary consumers 
A) light is seasonal and dim 
B) nutrients are abundant 
C) there is no saltwater 
D) there are no primary consumers

Question 2

Life in productive tropical reefs is best characterized by ____.

Accepted Answer

A) extreme competition for food, living space, and mates 
B) very few species, but large numbers of each species 
C) very little competition due to the abundance of resources 
D) mostly symbiotic relationships 
A) extreme competition for food, living space, and mates 
B) very few species, but large numbers of each species 
C) very little competition due to the abundance of resources 
D) mostly symbiotic relationships

Question 3

The coral reef community ____.

Accepted Answer

A) is made up exclusively of various species of coral polyps 
B) is limited to carnivorous animals 
C) lies only within the kelp forest habitat of the tropics 
D) is a highly productive and diverse collection of organisms in shallow water environments 
A) is made up exclusively of various species of coral polyps 
B) is limited to carnivorous animals 
C) lies only within the kelp forest habitat of the tropics 
D) is a highly productive and diverse collection of organisms in shallow water environments

Question 4

Describe Darwin's hypothesis for atoll formation around volcanic islands.

Accepted Answer

First, fringing coral reefs form in the

Question 5

Hermatypic corals live in warm, well-lit water.

Accepted Answer

A) True 
 B)False

Question 6

Why can red algae grow at greater depths than most other photosynthetic organisms?

Accepted Answer

A) Their accessory pigments absorb enough light to thrive in dim light. 
B) They are adapted to live at greater pressures. 
C) They grow to be extremely long, and can reach into the euphotic zone. 
D) They are partly heterotrophic, obtaining energy from captured zooplankton. 
A) Their accessory pigments absorb enough light to thrive in dim light. 
B) They are adapted to live at greater pressures. 
C) They grow to be extremely long, and can reach into the euphotic zone. 
D) They are partly heterotrophic, obtaining energy from captured zooplankton.

Question 7

A ring-shaped island of coral reefs and coral debris enclosing, or almost enclosing, a shallow lagoon from which no land protrudes is known as a(n)____.

Accepted Answer

A) open reef 
B) barrier reef 
C) fringing reef 
D) atoll 
A) open reef 
B) barrier reef 
C) fringing reef 
D) atoll

Question 8

The most important physical factor for intertidal communities is ____.

Accepted Answer

A) lack of light 
B) high salinity 
C) lack of nutrients 
D) the rise and fall of the tides 
A) lack of light 
B) high salinity 
C) lack of nutrients 
D) the rise and fall of the tides

Question 9

Individuals of representative families in deep water often tend to be much smaller than related individuals in the shallow ocean.

Accepted Answer

A) True 
 B)False

Question 10

Algae are classified by ____.

Accepted Answer

A) how they photosynthesize 
B) their location in the intertidal zone 
C) the color of their accessory pigments 
D) what they feed on 
A) how they photosynthesize 
B) their location in the intertidal zone 
C) the color of their accessory pigments 
D) what they feed on

Question 11

Which of these statements is FALSE concerning estuaries?

Accepted Answer

A) Larvae are often abundant there. 
B) Estuaries are in danger of development and pollution. 
C) Very few autotrophs live in estuaries, but many animals can be found there. 
D) Estuaries are places where saltwater and fresh water meet. 
A) Larvae are often abundant there. 
B) Estuaries are in danger of development and pollution. 
C) Very few autotrophs live in estuaries, but many animals can be found there. 
D) Estuaries are places where saltwater and fresh water meet.

Question 12

Ahermatypic corals ____.

Accepted Answer

A) are found in shallow waters in the tropics 
B) have symbiotic algae 
C) are found in deep water 
D) are actually plants 
A) are found in shallow waters in the tropics 
B) have symbiotic algae 
C) are found in deep water 
D) are actually plants

Question 13

Animals that are attached to the bottom are called ____.

Accepted Answer

A) sessile 
B) benthic motile 
C) infaunal 
D) interstitial 
A) sessile 
B) benthic motile 
C) infaunal 
D) interstitial

Question 14

The root-shaped jumble at the base of a seaweed is called a(n)____.

Accepted Answer

A) holdfast 
B) blade 
C) stamen 
D) aerenchyma 
A) holdfast 
B) blade 
C) stamen 
D) aerenchyma

Question 15

Coral reefs are typically home to ____.

Accepted Answer

A) a large number of species 
B) mostly one dominant species 
C) autotrophs only 
D) chemosynthetic microbes 
A) a large number of species 
B) mostly one dominant species 
C) autotrophs only 
D) chemosynthetic microbes

Question 16

A fringing reef ____.

Accepted Answer

A) forms near the coastline of an island 
B) has a deep lagoon that separates the reef from the island 
C) is ring-shaped and is not associated with an island 
D) is composed of a series of linear segments extending radially from an island 
A) forms near the coastline of an island 
B) has a deep lagoon that separates the reef from the island 
C) is ring-shaped and is not associated with an island 
D) is composed of a series of linear segments extending radially from an island

Question 17

Species abundance and diversity is generally higher on the deep ocean floor than in the part of the water column immediately above it.

Accepted Answer

A) True 
 B)False

Question 18

Because of the harsh contrast in salinity, estuaries are among the last productive of marine habitats.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following statements is FALSE concerning hydrothermal vents?

Accepted Answer

A) They are typically found in shallow waters near subduction zones. 
B) Certain animals are found at hydrothermal vents such as tube worms. 
C) Hydrothermal vents are typically found associated with spreading centers. 
D) Vent waters cool as they are released from the vent. 
A) They are typically found in shallow waters near subduction zones. 
B) Certain animals are found at hydrothermal vents such as tube worms. 
C) Hydrothermal vents are typically found associated with spreading centers. 
D) Vent waters cool as they are released from the vent.

Question 20

Which organism forms colonies of individuals living within a connected framework of skeletons?

Accepted Answer

A) kelp 
B) diatoms 
C) corals 
D) krill 
A) kelp 
B) diatoms 
C) corals 
D) krill

Primary productivity in estuaries is high because ____.

Life in productive tropical reefs is best characterized by ____.

The coral reef community ____.

Describe Darwin's hypothesis for atoll formation around volcanic islands.

Hermatypic corals live in warm, well-lit water.

Why can red algae grow at greater depths than most other photosynthetic organisms?

A ring-shaped island of coral reefs and coral debris enclosing, or almost enclosing, a shallow lagoon from which no land protrudes is known as a(n)____.

The most important physical factor for intertidal communities is ____.

Individuals of representative families in deep water often tend to be much smaller than related individuals in the shallow ocean.

Algae are classified by ____.

Which of these statements is FALSE concerning estuaries?

Ahermatypic corals ____.

Animals that are attached to the bottom are called ____.

The root-shaped jumble at the base of a seaweed is called a(n)____.

Coral reefs are typically home to ____.

A fringing reef ____.

Species abundance and diversity is generally higher on the deep ocean floor than in the part of the water column immediately above it.

Because of the harsh contrast in salinity, estuaries are among the last productive of marine habitats.

Which of the following statements is FALSE concerning hydrothermal vents?

Which organism forms colonies of individuals living within a connected framework of skeletons?

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Ocean Sediments

Water

Atmospheric Circulation

Ocean Circulation

Waves

Tides

Coasts

Life in the Ocean

Pelagic Communities

Uses and Abuses of the Ocean

Filters

Exam 14: Benthic Communities

Primary productivity in estuaries is high because ____.

Life in productive tropical reefs is best characterized by ____.

The coral reef community ____.

Describe Darwin's hypothesis for atoll formation around volcanic islands.

Hermatypic corals live in warm, well-lit water.

Why can red algae grow at greater depths than most other photosynthetic organisms?

A ring-shaped island of coral reefs and coral debris enclosing, or almost enclosing, a shallow lagoon from which no land protrudes is known as a(n)____.

The most important physical factor for intertidal communities is ____.

Individuals of representative families in deep water often tend to be much smaller than related individuals in the shallow ocean.

Algae are classified by ____.

Which of these statements is FALSE concerning estuaries?

Ahermatypic corals ____.

Animals that are attached to the bottom are called ____.

The root-shaped jumble at the base of a seaweed is called a(n)____.

Coral reefs are typically home to ____.

A fringing reef ____.

Species abundance and diversity is generally higher on the deep ocean floor than in the part of the water column immediately above it.

Because of the harsh contrast in salinity, estuaries are among the last productive of marine habitats.

Which of the following statements is FALSE concerning hydrothermal vents?

Which organism forms colonies of individuals living within a connected framework of skeletons?

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Ocean Sediments

Water

Atmospheric Circulation

Ocean Circulation

Waves

Tides

Coasts

Life in the Ocean

Pelagic Communities

Uses and Abuses of the Ocean

Filters