Phylum Nematoda is the largest phylum among pseudocoelomates and it is also known as roundworms. They have an organ-system level of organization. They have an unsegmented, round, tube-like body structure. They are free-living and parasitic and they have pseudocoelome which acts as a hydroskeleton. They have only longitudinal muscle fibers, circular muscles are absent so they have only restricted length. The body is covered with tough cuticle and syncytial epidermis. Locomotion takes place by contraction and relaxation of muscles. It is the first animal that has a complete alimentary canal and respiration takes place by general body surface. They reproduced through sexual reproduction and asexual reproduction is absent. So, take this quiz and increase your knowledge about phylum Nematoda or Aschelminthes or Helminths.
1. The study of roundworms is called .....
A. Ascariology
B. Nematology
C. Both of these
D. None of these
2. Which of the following is used in ascariasis?
A. Sunflower oil
B. Castor oil
C. Chenopodium oil
D. None of these
3. Which of the following are the first animals to have a straight and complete alimentary canal?
A. Arthropods
B. Mammals
C. Platyhelminthes
D. Nematodes
4. What is common between a liver fluke and roundworm?
A. Endoparasites of man
B. Have pseudocoelom
C. Have integument
D. Have well formed muscular system
5. The appendages in nematodes are ....
A. 6 pairs
B. 3 pairs
C. 9 pairs
D. Absent
6. Rippling is found in ....
A. Fertilized egg
B. Unfertilized egg
C. Spermatozoa
D. None of the above
7. The number of eggs laid daily by mature female Ascaris is about....
A. 2,000
B. 2,00,000
C. 20,000
D. 1,00,000
8. Eutyly is present in .....
A. Nematoda
B. Annelida
C. Arthropoda
D. Mollusca
9. The epidermis of Ascaris is ...
A. Multicellular
B. Columnar
C. Cuboidal
D. Syncytial
10. Hookworm is commonly known as ...
A. Necator
B. Ancylostoma
C. Both of these
D. None of these
11. No secondary host in the life history of ....
A. Taenia
B. Fasciola
C. Plasmodium
D. Ancylostoma
12. Number Of lips in Ascaris are .....
A. Two
B. One
C. Three
D. Four
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