Question 1

Fishes such as the Atlantic salmon that spend their adult lives at sea but return to fresh water to spawn are called __________.

Accepted Answer

The answer of Fishes such as the Atlantic salmon that...

Question 2

One lineage of the neopterygian fishes gave rise to the modern bony fishes.

Accepted Answer

A) True 
 B)False

Question 3

The ampullary organs of Lorenzini are receptors for detecting weak electrical fields.

Accepted Answer

A) True 
 B)False

Question 4

Unlike other vertebrates,the body fluids of hagfishes are

Accepted Answer

A)  strongly hypoosmotic to seawater.
B)  strongly hyperosmotic to seawater.
C)  in osmotic equilibrium with seawater.
D)  none of the aboveE) A) and B)
F) None of the above

Question 5

The _________ is composed of vertebrates having eel-like bodies,a biting mouth with two rows of eversible teeth,and numerous slime glands.

Accepted Answer

The answer of The _________ is composed of vertebrates having...

Question 6

Like a leech,the lamprey secretes _____________ into the wound of its host fish.

Accepted Answer

The answer of Like a leech,the lamprey secretes _____________ into...

Question 7

The coelocanths

Accepted Answer

A)  are all extinct.
B)  were found off the coast of South Africa and Indonesia.
C)  are members of the Class Actinopterygii.
D)  form a mud cocoon during the dry seasons.E) B) and D)
F) A) and D)

Question 8

Despite its name,the ectoparasitic marine lamprey Petromyzon marinus ascends freshwater streams to spawn.

Accepted Answer

A) True 
 B)False

Question 9

The fisheries of the Great Lakes were brought to almost total collapse in this century by the invasion of the __________.

Accepted Answer

The answer of The fisheries of the Great Lakes were...

Question 10

A representative of chondrosteans is

Accepted Answer

A)  the gar.
B)  the sturgeon.
C)  the coelacanth.
D)  the bowfin.E) A) and B)
F) A) and C)

Question 11

At the latest,the early vertebrates branched into the agnathans and the gnathostomes during the Cambrian period.

Accepted Answer

A) True 
 B)False

Question 12

The earliest fishlike vertebrates were a paraphyletic assemblage of agnathans.

Accepted Answer

A) True 
 B)False  True

Question 13

In North America,both marine and freshwater lampreys spawn in freshwater streams.

Accepted Answer

A) True 
 B)False  True

Question 14

Declines in the salmon population in the northwest of the U.S.have resulted in 25% fewer fish migrating up the Columbia and Snake Rivers.
Multiple Choice Questions

Accepted Answer

A) True 
 B)False

Question 15

The ___________ is composed of vertebrates having placoid scales,a heterocercal caudal fin,a ventral mouth,and a cartilaginous endoskeleton.

Accepted Answer

The answer of The ___________ is composed of vertebrates having...

Question 16

The chondrosteans are one group of the most primitive of the ray-finned fishes.

Accepted Answer

A) True 
 B)False

Question 17

The ray-finned fishes belong to the class Sarcopterygii.

Accepted Answer

A) True 
 B)False

Question 18

The lobe-finned fishes consist of the extinct _____________ and the extant coelacanths.

Accepted Answer

rhipidistians

Question 19

The lungfishes

Accepted Answer

A)  are all extinct.
B)  do not really have functional lungs.
C)  live only in Australia,Africa,and South America.
D)  are an aberrant branch of the cartilaginous fishes.E) C) and D)
F) All of the above

Question 20

The control of the lamprey has been accomplished around the Great Lakes by

Accepted Answer

A)  heavy fishing of lampreys.
B)  the disruption of migration routes.
C)  chemicals added to spawning streams.
D)  adding sterilized females to the population.E) All of the above
F) C) and D)

Exam 16: Fishes

Fishes such as the Atlantic salmon that spend their adult lives at sea but return to fresh water to spawn are called __________.

Correct AnswerverifiedShow Answer

One lineage of the neopterygian fishes gave rise to the modern bony fishes.

Correct AnswerverifiedShow Answer

The ampullary organs of Lorenzini are receptors for detecting weak electrical fields.

Correct AnswerverifiedShow Answer

Unlike other vertebrates,the body fluids of hagfishes are

Correct AnswerverifiedShow Answer

The _________ is composed of vertebrates having eel-like bodies,a biting mouth with two rows of eversible teeth,and numerous slime glands.

Correct AnswerverifiedShow Answer

Like a leech,the lamprey secretes _____________ into the wound of its host fish.

Correct AnswerverifiedShow Answer

The coelocanths

Correct AnswerverifiedShow Answer

Despite its name,the ectoparasitic marine lamprey Petromyzon marinus ascends freshwater streams to spawn.

Correct AnswerverifiedShow Answer

The fisheries of the Great Lakes were brought to almost total collapse in this century by the invasion of the __________.

Correct AnswerverifiedShow Answer

A representative of chondrosteans is

Correct AnswerverifiedShow Answer

At the latest,the early vertebrates branched into the agnathans and the gnathostomes during the Cambrian period.

Correct AnswerverifiedShow Answer

The earliest fishlike vertebrates were a paraphyletic assemblage of agnathans.

Correct AnswerverifiedTrue

In North America,both marine and freshwater lampreys spawn in freshwater streams.

Correct AnswerverifiedTrue

Declines in the salmon population in the northwest of the U.S.have resulted in 25% fewer fish migrating up the Columbia and Snake Rivers. Multiple Choice Questions

Correct AnswerverifiedShow Answer

The ___________ is composed of vertebrates having placoid scales,a heterocercal caudal fin,a ventral mouth,and a cartilaginous endoskeleton.

Correct AnswerverifiedShow Answer

The chondrosteans are one group of the most primitive of the ray-finned fishes.

Correct AnswerverifiedShow Answer

The ray-finned fishes belong to the class Sarcopterygii.

Correct AnswerverifiedShow Answer

The lobe-finned fishes consist of the extinct _____________ and the extant coelacanths.

Correct Answerverifiedrhipidistians

The lungfishes

Correct AnswerverifiedShow Answer

The control of the lamprey has been accomplished around the Great Lakes by

Correct AnswerverifiedShow Answer

Correct Answer
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True

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True

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rhipidistians

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