Previous Year Questions
2025
ZOOLOGY — HONOURS
Paper : DSCC-6
(Parasitology)
Full Marks : 75
Section - A
1. Answer any ten questions :
2 × 10
(a) What are the differences between obligate and facultative parasite? Give example.
(b) What is PKDL?
(c) Mention two vectors of Leishmania donovani.
(d) Distinguish between vector and reservoir. Give examples.
(e) Distinguish between male and female adult Ascaris lumbricoides.
(f) What do you mean by parasitoid? Give example.
(g) In what way fertilized egg of Ascaris lumbricoides differs from unfertilized egg?
(h) What are the differences between ring stage of Plasmodium vivax and P. falciparum?
(i) What is hydatid cyst?
(j) What is Loeffler's syndrome?
(k) Name two prey species of Hood Mocking birds.
(l) Write down the scientific name of one gall forming nematode.
(m) Name two diseases transmitted by Ixodes tick.
(n) Name one antiprotozoal and one anthelmintic drug.
(o) Give one morphological and one physiological adaptation in Helminths.
Section - B
2. Write short notes on the following (any three) :
5 × 3
(a) Parasitic behaviour of cookie cutter shark
(b) Molecular mimicry
(c) Zoonosis
(d) Biology of Sarcoptes sp.
(e) Parasitic castration.
Section - C
Answer any four questions.
3. (a) Illustrate the life cycle of Ascaris lumbricoides with diagram.
(b) Describe 'larva migrans' with special reference to hookworm.
(c) Comment on the control of Pediculus sp. 5+3+2
(b) Describe 'larva migrans' with special reference to hookworm.
(c) Comment on the control of Pediculus sp. 5+3+2
4. (a) Schematically represent the erythrocytic cycle of Plasmodium vivax.
(b) What are hypnozoites? Describe the pathogenic effects of P. falciparum.
(c) Give a note on epidemiology of Schistosoma haematobium. 5+(1+2)+2
(b) What are hypnozoites? Describe the pathogenic effects of P. falciparum.
(c) Give a note on epidemiology of Schistosoma haematobium. 5+(1+2)+2
5. (a) How does biological vector differ from mechanical vector?
(b) Comment on the pathogenicity and control of Entamoeba histolytica.
(c) Distinguish between rhabditiform and filariform larva.
(d) Justify the role of sandfly as a potential vector. 2+(2+2)+2+2
(b) Comment on the pathogenicity and control of Entamoeba histolytica.
(c) Distinguish between rhabditiform and filariform larva.
(d) Justify the role of sandfly as a potential vector. 2+(2+2)+2+2
6. (a) Briefly describe with labelled diagram the amastigote and the promastigote stages of Leishmania donovani with suitable diagram.
(b) Briefly describe the life cycle of Meloidogyne incognita.
(c) What is reverse zoonosis? (2+2)+4+2
(b) Briefly describe the life cycle of Meloidogyne incognita.
(c) What is reverse zoonosis? (2+2)+4+2
7. (a) Compare and contrast the transmission modes of Ixodes and Sarcoptes species.
(b) What is antigen masking?
(c) What is Maurer's dot?
(d) State the mode of contamination of Echinococcus granulosus to man. 4+2+2+2
(b) What is antigen masking?
(c) What is Maurer's dot?
(d) State the mode of contamination of Echinococcus granulosus to man. 4+2+2+2
8. (a) What are unilocular and multilocular hydatid cyst?
(b) Comment on the medical importance of scabies mites.
(c) Describe parasitic nature of Hood Mocking bird.
(d) Draw a labelled diagram of a mature cyst of Entamoeba histolytica. 2+2+4+2
(b) Comment on the medical importance of scabies mites.
(c) Describe parasitic nature of Hood Mocking bird.
(d) Draw a labelled diagram of a mature cyst of Entamoeba histolytica. 2+2+4+2
9. (a) Explain with suitable diagram the life cycle of Ancylostoma duodenale.
(b) What is Cerebral malaria?
(c) Comment on the parasitic behaviour of vampire bats. (3+2)+2+3
(b) What is Cerebral malaria?
(c) Comment on the parasitic behaviour of vampire bats. (3+2)+2+3
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