Question 1

The _______________ are burrowing marine worms with a proboscis,trunk,and usually one or two caudal appendages.

Accepted Answer

The answer of The _______________ are burrowing marine worms with...

Question 2

Infective juveniles of hookworms gain access to a host by penetration of the ____________.

Accepted Answer

The answer of Infective juveniles of hookworms gain access to...

Question 3

The parasite found in the U.S.where people contract it by eating poorly cooked pork,bear meat,etc.is

Accepted Answer

A) Trichinella. 
B) Ascaris. 
C) Pinworm. 
D) Elephantiasis. 
E) Hookworm. 
A) Trichinella. 
B) Ascaris. 
C) Pinworm. 
D) Elephantiasis. 
E) Hookworm.

Question 4

On what bases do scientists suspect that the nematodes may be even more diverse than the insects?

Accepted Answer

Scientists suspect that nematodes, also

Question 5

Adult Ascaris worms are found in the host's _________________.or

Accepted Answer

intestines

Question 6

Humans are infected with Trichinella spiralis by eating insufficiently cooked ______________.

Accepted Answer

The answer of Humans are infected with Trichinella spiralis by...

Question 7

Copulatory spicules function to

Accepted Answer

A) attract the female. 
B) deliver sperm to the female vagina or gonopore. 
C) hold the female vulva open against hydrostatic pressure. 
D) store sperm in the male until copulation occurs. 
E) store sperm in the female after copulation. 
A) attract the female. 
B) deliver sperm to the female vagina or gonopore. 
C) hold the female vulva open against hydrostatic pressure. 
D) store sperm in the male until copulation occurs. 
E) store sperm in the female after copulation.

Question 8

The mild nematode infection somewhat common among children in the southern U.S. ,and transmitted as eggs from anal to oral regions by the hands is

Accepted Answer

A) Trichinella. 
B) Ascaris. 
C) Pinworm. 
D) Elephantiasis. 
E) Hookworm. 
A) Trichinella. 
B) Ascaris. 
C) Pinworm. 
D) Elephantiasis. 
E) Hookworm.

Question 9

Filarial worms (Wuchereria and Brugia)are transmitted by _________________.

Accepted Answer

The answer of Filarial worms (Wuchereria and Brugia)are transmitted by...

Question 10

Nematodes have a fluid-filled pseudocoel that serves as a _____________ skeleton.

Accepted Answer

The answer of Nematodes have a fluid-filled pseudocoel that serves...

Question 11

Outline the mode of infection of two of the following: hookworm,pinworm,intestinal roundworm,and trichina worm.

Accepted Answer

Hookworm: The mode of infection for hook

Question 12

In contrast to the function of our bodies,the nematode is unusual insofar as it

Accepted Answer

A) lacks circular muscles to antagonize the longitudinal muscles and must rely on the rigid cuticle and hydrostatic pressure. 
B) extends muscle cells to the nerve process,rather than nerves to the muscle cells. 
C) does not utilize the Krebs cycle and electron transport chain in anaerobic parasitic species. 
D) moves food through its alimentary tract without direct muscle contractions on the intestine. 
E) All of the choices are "unusual" nematode adaptations. 
A) lacks circular muscles to antagonize the longitudinal muscles and must rely on the rigid cuticle and hydrostatic pressure. 
B) extends muscle cells to the nerve process,rather than nerves to the muscle cells. 
C) does not utilize the Krebs cycle and electron transport chain in anaerobic parasitic species. 
D) moves food through its alimentary tract without direct muscle contractions on the intestine. 
E) All of the choices are "unusual" nematode adaptations.

Question 13

Members of the phylum Priapulida

Accepted Answer

A) are metameric. 
B) are coelomate because they have a peritoneum. 
C) are hermaphroditic. 
D) have a proboscis. 
E) are active predators that pursue prey. 
A) are metameric. 
B) are coelomate because they have a peritoneum. 
C) are hermaphroditic. 
D) have a proboscis. 
E) are active predators that pursue prey.

Question 14

Which of the following statements is NOT correct about nematodes?

Accepted Answer

A) There are three layers of tissues in the body 
B) Nematodes lack circular muscles under the tegument 
C) The body cavity provides a hydrostatic skeleton 
D) Nematodes have a smooth unsegmented outside body wall 
E) Nematodes are all carnivores but may be free-living or parasitic 
A) There are three layers of tissues in the body 
B) Nematodes lack circular muscles under the tegument 
C) The body cavity provides a hydrostatic skeleton 
D) Nematodes have a smooth unsegmented outside body wall 
E) Nematodes are all carnivores but may be free-living or parasitic

Question 15

In what two roundworm parasite cycles do worms get "coughed up" and swallowed in order to complete their cycle?

Accepted Answer

A) Ascaris and trichina 
B) Ascaris and hookworm 
C) Elephantiasis and trichina 
D) Hookworm and trichina 
A) Ascaris and trichina 
B) Ascaris and hookworm 
C) Elephantiasis and trichina 
D) Hookworm and trichina

Question 16

Give the reasoning behind the more recent classification of the clades Lophotrochozoa and Ecdysozoans.

Accepted Answer

The more recent classification of the cl

Question 17

The entire forepart of the body of a loricifera can be withdrawn into the __________________.

Accepted Answer

The answer of The entire forepart of the body of...

Question 18

The outer body covering of a nematode is a relatively thick,noncellular cuticle,which is constructed primarily of a protein known as _______.

Accepted Answer

The answer of The outer body covering of a nematode...

Question 19

Which of the following is NOT a factor that protects North Americans from many parasitic worm infections?

Accepted Answer

A) Much of the U.S.has bitter cold winters. 
B) Most of the population wears shoes. 
C) We usually cook our meat and there are few raw meat dishes. 
D) We have superior drugs and surgeons. 
E) We do not use human excreta ("night soil")to directly fertilize crops. 
A) Much of the U.S.has bitter cold winters. 
B) Most of the population wears shoes. 
C) We usually cook our meat and there are few raw meat dishes. 
D) We have superior drugs and surgeons. 
E) We do not use human excreta ("night soil")to directly fertilize crops.

Question 20

Most male nematodes bear a pair of ________ ________ at their posterior end to aid in insemination of the female.

Accepted Answer

The answer of Most male nematodes bear a pair of...

Exam 18: Smaller Ecdysozoans

The _______________ are burrowing marine worms with a proboscis,trunk,and usually one or two caudal appendages.

Infective juveniles of hookworms gain access to a host by penetration of the ____________.

The parasite found in the U.S.where people contract it by eating poorly cooked pork,bear meat,etc.is

On what bases do scientists suspect that the nematodes may be even more diverse than the insects?

Adult Ascaris worms are found in the host's _________________.or

Humans are infected with Trichinella spiralis by eating insufficiently cooked ______________.

Copulatory spicules function to

The mild nematode infection somewhat common among children in the southern U.S. ,and transmitted as eggs from anal to oral regions by the hands is

Filarial worms (Wuchereria and Brugia)are transmitted by _________________.

Nematodes have a fluid-filled pseudocoel that serves as a _____________ skeleton.

Outline the mode of infection of two of the following: hookworm,pinworm,intestinal roundworm,and trichina worm.

In contrast to the function of our bodies,the nematode is unusual insofar as it

Members of the phylum Priapulida

Which of the following statements is NOT correct about nematodes?

In what two roundworm parasite cycles do worms get "coughed up" and swallowed in order to complete their cycle?

Give the reasoning behind the more recent classification of the clades Lophotrochozoa and Ecdysozoans.

The entire forepart of the body of a loricifera can be withdrawn into the __________________.

The outer body covering of a nematode is a relatively thick,noncellular cuticle,which is constructed primarily of a protein known as _______.

Which of the following is NOT a factor that protects North Americans from many parasitic worm infections?

Most male nematodes bear a pair of ________ ________ at their posterior end to aid in insemination of the female.

Life: Biological Principles and the Science of Zoology

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Cells As Units of Life

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Most male nematodes bear a pair of at their posterior end to aid in insemination of the female.