AnswersGV 2019 - MPS Environmental Science Semester 2 SC631Coral Reefs

Coral Reefs Answers

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1
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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.
2
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Coral reefs are one of the oldest ecosystems on Earth.

A
T
B
F
3

What is the purpose of the tentacles of coral polyps?

A
defense
B
food capture
C
clearing
D
all of the above
4

Reef producing coral are called _______.

A
mobile
B
hermatypic
C
limestone polyps
D
all of the above
5

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

A
solar irradiance
B
dilution
C
xenobiotics
D
harvesting
6

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
7

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

A
T
B
F
8

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

A
T
B
F
9

Fish rely on coral for _______.

A
shelter
B
food supply
C
camouflage
D
all of the above
10

What is a direct cause of coral bleaching?

A
exposure to sunlight
B
the loss of symbiotic algae
C
overgrazing by fish
D
all of the above
11

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.
12

Legislation has been ineffective at preserving coral reefs.

A
T
B
F
13

Reefs grow best in _______.

A
deep water
B
low salinity
C
temperatures below 25°C
D
shallow water
14

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.
15

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.
16

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

A
T
B
F

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