Chapter 8: The Nematodes

Question 1

Two phyla that include multicellular worms are:

Answer 1

Platyhelminthes and Nemathelminthes

Question 2

Cellophane anal swab is employed for the collection of the following eggs from the perianal region for the examination of

Answer 2

Enterobius vermicularis or Pinworm or Seatworm

Question 3

Walking barefoot on infected soil may result in:

Answer 3

Hookworm infection

Question 4

Platyhelminthes are commonly called as:

Answer 4

Flatworms

Question 5

Yes or No: A nematode is a segmented single-called roundworm

Answer 5

No

Question 6

Yes or No: Nematode possess completely alimentary tracts that contain internal organ system

Answer 6

Yes

Question 7

What larva enters body through skin penetration

Answer 7

Strongyloides stercoralis or Threadworm

Question 8

Which of the following eggs is football-shaped and has a typical plug at each pole

Answer 8

Trichuris trichiura or Whipworm

Question 9

Which of the following eggs is characteristically flattened on one side with thick-walled colorless shell

Answer 9

Enterobius vermicularis or Pinworm or Seatworm

Question 10

Arrange the following nematode species in order according to the increasing size of their typical eggs

Answer 10

1- Necator americanus or New World hookworm
2- Ancylostoma duodenale or Old World hookworm
3- Trichuris trichiura or Whipworm
4- Enterobius vermicularis or Pinworm or Seatworm
5- Strongyloides stercoralis or Threadworm

Question 11

Which nematodes enter the body of man by direct skin penetration of larval stage

Answer 11

Necator americanus or New World hookworm
Strongyloides stercoralis or Threadworm
Ancylostoma duodenale or Old World hookworm

Question 12

In which nematodes is man infected by ingestion of fully embryonated eggs

Answer 12

Trichuris trichiura or Whipworm
Ascaris lumbricoides or Roundworm

Question 13

Which nematode are hookworm species

Answer 13

Ancylostoma duodenale or Old World hookworm
Necator americanus or New World hookworm