NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JANUARY/FEBRUARY 2018 EXAMINATION

COURSE CODE: BIO 411

COURSE TITLE: PARASITOLOGY

CREDIT UNITS: 2               

TIME ALLOWED: 2 HOURS

INSTRUCTION: ANSWER QUESTION 1 AND ANY OTHER THREE QUESTIONS

1. (a) Define a host.  (2 marks)

    (b) Give two named examples of the following groups of parasites: Protozoans, nematodes, Acanthocephalans, Arthropods (4 marks)

    (c) Enumerate four categories of parasitism and give two named examples of each category. (8 marks)

    (d) Enumerate ten aims of epidemiology (5 marks)

    (e) Describe the tools of measurement in epidemiology. (6 marks)

2. (a) Briefly explain the Disability Adjusted Life Years (DALYs) (5 marks)

    (b) Distinguish between Parasitology and Epidemiology                           (5 marks)

    (c) Describe any five branches of Parasitology                                          (5 marks)

3. (a) Outline the major features of the life cycle of ancanthocephalans that distinguished them from leeches and arthropods?   (5 marks)

     (b) Describe the mode of transmission of parasitic diseases with the aid of an illustration (10 marks)

4. With the aid of a schematic diagram, describe the life cycle of human Plasmodium species (15 marks)

5. (a) Using suitable illustrations, describe the life cycle of Polymorphus species.    (5 marks)

    (b) Give a detailed description of Loose associations (10 marks)