Nematodes Quiz: MCQs With Answers

Reviewed by Stephen Reinbold
Stephen Reinbold, PhD, Biological Sciences |
Biology Expert
Review Board Member
Stephen Reinbold, a Ph.D. holder in Biological Sciences, dedicated nearly thirty years to teaching various subjects, including general biology, environmental science, zoology, genetics, and anatomy & physiology at Metropolitan Community College in Kansas City, Missouri. During his tenure, he had a keen interest in imparting scientific methodology and fostering student research projects. In his retirement, Stephen now engages in part-time editing while continuing his work online. His passion for education and commitment to scientific learning define his extensive career in the field.
, PhD, Biological Sciences
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Nematodes Quiz: MCQs With Answers - Quiz

Here's a fun and amazing Nematodes quiz that we've prepared here. Try playing this quiz and we'll see how much knowledge you have about Nematodes and its related concepts. Nematodes can be described as invertebrate roundworms that are usually found in marine, freshwater, and terrestrial environments. Take this quiz to see how well you can score in this test about Nematode. So, let's start the quiz then. Goodluck!


Questions and Answers
  • 1. 

    Which of the following nematodes does not pass through the lungs during its life cycle?

    • A.

      Ancylostoma duodenale

    • B.

      Necator americanus

    • C.

      Capillaria philippinensis

    • D.

      Ascaris lumbricoides

    Correct Answer
    C. Capillaria philippinensis
    Explanation
    Capillaria philippinensis is the correct answer because it is a nematode that does not pass through the lungs during its life cycle. Ancylostoma duodenale, Necator americanus, and Ascaris lumbricoides are all nematodes that do pass through the lungs at some point during their life cycles.

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  • 2. 

    Which of the following stages of Ancylostoma duodenale is infective to human beings?

    • A.

      Rhabditiform larva

    • B.

      Eggs

    • C.

      Filariform larva

    • D.

      Adult worm

    Correct Answer
    C. Filariform larva
    Explanation
    The filariform larva stage of Ancylostoma duodenale is infective to human beings. This larval stage is found in the soil and can penetrate the skin of humans, leading to infection. Once inside the body, the filariform larvae migrate to the small intestine where they develop into adult worms and cause the parasitic infection known as hookworm disease. The other stages mentioned, such as the rhabditiform larva and eggs, are not directly infective to humans.

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  • 3. 

    Which is the feeding stage of Necator americanus?

    • A.

      Rhabditiform larva

    • B.

      Eggs

    • C.

      Filariform larva

    • D.

      Adult worm

    Correct Answer
    A. Rhabditiform larva
    Explanation
    The feeding stage of Necator americanus is the Rhabditiform larva. This stage is characterized by the larva's ability to feed on organic matter in the soil. Once the larva has ingested enough nutrients, it will develop into the Filariform larva stage, which is the infective stage for humans. The Filariform larva can penetrate the skin of a human host and migrate to the intestines, where it matures into an adult worm that feeds in the blood vessels of the intestines. Therefore, the correct answer is Rhabditiform larva and adult.

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  • 4. 

    Which of the following is the intermediate host for Capillaria philippinensis?  Lapu-lapu  Bagsit  Tilapia  Snail  

    • A.

      Lapu-lapu

    • B.

      Bagsit

    • C.

      Tilapia

    • D.

      Snail

    Correct Answer
    B. Bagsit
  • 5. 

    Hookworm and Strongyloides infection are usually acquired through:

    • A.

      Bite of the adult

    • B.

      Ingestion of contaminated food

    • C.

      Contact of skin with infected soil

    • D.

      None of the above

    Correct Answer
    C. Contact of skin with infected soil
    Explanation
    Hookworm and Strongyloides infection are usually acquired through contact of the skin with infected soil. This is because the larvae of these parasites live in the soil and can penetrate the skin when a person comes into direct contact with the contaminated soil. Once inside the body, these parasites migrate to the intestines and cause infection. The other options, such as bite of the adult or ingestion of contaminated food, are not the usual modes of transmission for these infections.

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  • 6. 

    Semilunar cutting plates are found in the buccal capsule of:

    • A.

      Ancylostoma duodenale

    • B.

      Necator americanus

    • C.

      Capillaria philippinensis

    • D.

      Ascaris lumbricoides

    Correct Answer
    B. Necator americanus
    Explanation
    Semilunar cutting plates are found in the buccal capsule of Necator americanus. These cutting plates are specialized structures that help the parasite to attach to and feed on the host's intestinal wall. They have a crescent shape and are used to cut through the host's tissue during the feeding process. Ancylostoma duodenale, Capillaria philippinensis, and Ascaris lumbricoides do not possess these specific cutting plates in their buccal capsules.

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  • 7. 

    The 2 pairs of ventral teeth are found in the buccal capsule of: 

    • A.

      Ancylostoma duodenale

    • B.

      Necator americanus

    • C.

      Capillaria philippinensis

    • D.

      Ascaris lumbricoides

    Correct Answer
    A. Ancylostoma duodenale
    Explanation
    The correct answer is Ancylostoma duodenale. Ancylostoma duodenale is a parasitic worm that infects the small intestine of humans. It has two pairs of ventral teeth located in its buccal capsule. These teeth are used by the worm to attach itself to the intestinal wall and feed on the host's blood. This adaptation allows Ancylostoma duodenale to survive and thrive in its host's body.

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  • 8. 

    Heart and lung migration is observed in:

    • A.

      Ancylostoma duodenale

    • B.

      Strongyloides stercoralis

    • C.

      Both A and B

    • D.

      Neither A and B

    Correct Answer
    C. Both A and B
    Explanation
    Heart and lung migration is observed in both Ancylostoma duodenale and Strongyloides stercoralis. This means that both of these parasites have the ability to migrate to the heart and lungs of their host organisms. This migration is a characteristic feature of these parasites and is important for their life cycle and survival.

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  • 9. 

    The causative agent of Cochin china diarrhea is:  

    • A.

      Ancylostoma duodenale

    • B.

      Necator americanus

    • C.

      Capillaria philippinensis

    • D.

      Strongyloides stercoralis

    Correct Answer
    D. Strongyloides stercoralis
    Explanation
    Cochin china diarrhea is caused by Strongyloides stercoralis. This parasitic nematode infects the small intestine of humans and can cause symptoms such as diarrhea, abdominal pain, and weight loss. Ancylostoma duodenale and Necator americanus are hookworms that can cause anemia and intestinal symptoms, but they do not specifically cause Cochin china diarrhea. Capillaria philippinensis is a parasite that can cause intestinal infection, but it is not associated with Cochin china diarrhea.

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  • 10. 

    Capable of skin penetration except:  

    • A.

      Ancylostoma duodenale

    • B.

      Necator americanus

    • C.

      Capillaria philippinensis

    • D.

      Strongyloides stercoralis

    Correct Answer
    C. Capillaria philippinensis
    Explanation
    Capillaria philippinensis is not capable of skin penetration. The other three parasites listed, Ancylostoma duodenale, Necator americanus, and Strongyloides stercoralis, are all known to be capable of penetrating the skin.

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  • 11. 

    Tail tip contains 2 nuclei in case of microfilariae of:  

    • A.

      Wuchereria bancrofti

    • B.

      Brugia malayi

    • C.

      Both A and B

    • D.

      Neither A and B

    Correct Answer
    B. Brugia malayi
    Explanation
    The tail tip of microfilariae of Brugia malayi contains 2 nuclei.

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  • 12. 

    A graceful curve with distinct rows of nuclei are characteristic of:  

    • A.

      Wuchereria bancrofti

    • B.

      Brugia malayi

    • C.

      Both A and B

    • D.

      Neither A and B

    Correct Answer
    A. Wuchereria bancrofti
    Explanation
    A graceful curve with distinct rows of nuclei is characteristic of Wuchereria bancrofti.

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  • 13. 

    River blindness is the name given to disease caused by:  

    • A.

      Onchocerca volvulus

    • B.

      Loa Loa

    • C.

      Both A and B

    • D.

      Neither A and B

    Correct Answer
    A. Onchocerca volvulus
    Explanation
    The correct answer is Onchocerca volvulus. River blindness, also known as onchocerciasis, is caused by the parasitic worm Onchocerca volvulus. This worm is transmitted to humans through the bites of infected blackflies. The larvae of the worm migrate to the skin and eyes, causing severe itching, skin rashes, and visual impairment or blindness. Loa loa is another parasitic worm that causes a different disease called loiasis, but it is not responsible for river blindness. Therefore, the correct answer is Onchocerca volvulus.

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  • 14. 

    Fugitive or calabar swelling can be seen in infection with:  

    • A.

      Onchocerca volvulus

    • B.

      Loa Loa

    • C.

      Both A and B

    • D.

      Neither A and B

    Correct Answer
    B. Loa Loa
    Explanation
    Fugitive or calabar swelling is a symptom that can be seen in infection with Loa Loa. This parasitic infection is caused by Loa Loa worms, which are transmitted through the bite of infected deer flies or mango flies. The worms migrate through the subcutaneous tissues, causing localized swelling and inflammation. This swelling is often transient and can move from one area of the body to another, hence the term "fugitive" swelling. Onchocerca volvulus is another parasitic infection that can cause skin-related symptoms, but it does not typically cause fugitive swelling. Therefore, the correct answer is Loa Loa.

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  • 15. 

    Mango fly is the vector for:  

    • A.

      Onchocerca volvulus

    • B.

      Loa Loa

    • C.

      Both A and B

    • D.

      Neither A and B

    Correct Answer
    B. Loa Loa
    Explanation
    The correct answer is Loa Loa. Loa Loa is a parasitic worm that causes Loiasis, also known as African eye worm. The mango fly, also known as the deer fly or mango worm fly, is the vector for transmitting Loa Loa to humans. Onchocerca volvulus, on the other hand, is transmitted by black flies and causes river blindness. Therefore, the mango fly is specifically associated with the transmission of Loa Loa.

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Stephen Reinbold |PhD, Biological Sciences |
Biology Expert
Stephen Reinbold, a Ph.D. holder in Biological Sciences, dedicated nearly thirty years to teaching various subjects, including general biology, environmental science, zoology, genetics, and anatomy & physiology at Metropolitan Community College in Kansas City, Missouri. During his tenure, he had a keen interest in imparting scientific methodology and fostering student research projects. In his retirement, Stephen now engages in part-time editing while continuing his work online. His passion for education and commitment to scientific learning define his extensive career in the field.

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