AnswersFL-2001340-Environmental Science Sem 2Ocean Exploration

Coral Reefs Answers

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1
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What is the purpose of the tentacles of coral polyps?

A
defense
B
food capture
C
clearing
D
all of the above
2
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Which of the following statements about coral reef preservation efforts is true?

A
In order to preserve coral reefs, all aquarium trade in coral reef organisms must end.
B
Legislation has had no impact on coral reef preservation efforts.
C
Various preservation methods have had some positive impact on coral reef preservation.
D
Education of fishermen has eliminated all coral reef loss.
3

Which of the following is true of coral?

A
It is located in deep sea regions.
B
It supports few species.
C
It is composed of a single large and complex coral organism.
D
It is composed of thousands of individual coral organisms.
4

Coral bleaching that occurs because of the introduction of foreign substances is _______.

A
solar irradiance
B
dilution
C
xenobiotics
D
harvesting
5

Reefs grow best in _______.

A
deep water
B
low salinity
C
temperatures below 25°C
D
shallow water
6

Coral bleaching occurs when a colony of polyps are under stress.

A
T
B
F
7

What is the main concern with coral harvesting methods?

A
Coral harvesting methods are not economically profitable.
B
The coral cannot regenerate quickly enough to recover from harvesting practices.
C
Organisms that rely on coral are harmed by the methods, even though the coral is not.
D
The coral is harmed by the methods, even though the organisms that rely on it are not.
8

Fish rely on coral for _______.

A
shelter
B
food supply
C
camouflage
D
all of the above
9

Which of the following can lead to coral bleaching?

A
long-term temperature variations
B
increased solar radiation
C
freshwater dilution
D
all of the above
10

Legislation has been ineffective at preserving coral reefs.

A
T
B
F
11

Which of the following statements accurately describes the relationship between coral reefs and aquatic organisms?

A
Aquatic organisms have only a predatory relationship with coral reefs.
B
Coral reefs provide aquatic organisms with resources but derive no benefits in return.
C
Coral reefs provide resources for aquatic organisms and derive resources from other organisms as well.
D
Aquatic organisms live independently of coral reefs.
12

Which of the following can lead to coral bleaching?

A
long-term temperature variations
B
increased solar radiation
C
freshwater dilution
D
all of the above
13

Polyps are distinct organisms that live in communities that make up coral.

A
T
B
F
14

Coral reefs are sometimes referred to as the rainforests of the ocean because of their high levels of biodiversity.

A
T
B
F
15

Coral bleaching that occurs because of the introduction of foreign substances is _______.

A
solar irradiance
B
dilution
C
xenobiotics
D
harvesting
16

Reefs grow best in _______.

A
deep water
B
low salinity
C
temperatures below 25°C
D
shallow water
17

Coral reefs are one of the oldest ecosystems on Earth.

A
T
B
F
18

What is the purpose of the tentacles of coral polyps?

A
defense
B
food capture
C
clearing
D
all of the above
19

Which of the following statements about coral reef preservation efforts is true?

A
In order to preserve coral reefs, all aquarium trade in coral reef organisms must end.
B
Legislation has had no impact on coral reef preservation efforts.
C
Various preservation methods have had some positive impact on coral reef preservation.
D
Education of fishermen has eliminated all coral reef loss.
20

What is the most important reason to continue efforts to preserve coral reefs?

A
Coral reefs are a valuable commodity in the aquarium business.
B
Coral reefs support a wide variety of organisms.
C
Coral reefs are one of the oldest ecosystems.
D
Coral reefs are important for marine recreation.

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