waecE-LEARNING
Biology Paper 1 Practical, May/June 2011  
Questions:   1 2 3 4   Main
General Comments
Weakness/Remedies
Strength




Question 4

Carefully study specimens J and K and answer questions 4(a) to 4(d).

  1.  Name the type of refuse in specimens:
    (i)  J;
    (ii) K.                                                                                                                 (2 marks )
  2.   (i)      List three animal vectors of disease causing organisms that breed on each of specimens J  and K                                                                                                   (6 marks)
    (ii)       Name four diseases each caused by the animal vectors associated
                With each of specimens J and K                                       (8marks )
  3.    Name one method of disposal of each of specimens J and K in:
    (i) Rural areas;
    (ii) Urban areas.                                                                                             (4 marks )

  4.    (i)     State four effects of improper disposal of specimen K                             (4 marks )
    (ii)     In a tabular form, state five differences between specimen J and K                 (5 marks )
    (iii)      Outline one way in which specimen J is of importance to farmers.                  (1 mark )


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OBSERVATION

Many candidates performed fairly well on this question and scored fair marks.  Most candidates could state the type of refuse namely J- dry refuse/waste and K wet refuse/waste/sewage/  Most candidates could correctly state animal vectors that breed on specimens J and K and the diseases associated with the specimens but lost marks due to spelling errors.  Expected answers include:

Animal vectors that breed on specimen J

-     Rat;
-     Housefly;
-     cockroach.

Animal vectors that breed on specimen K
-     Housefly;
-     Black fly;
-     Female Aedes/Anopheles mosquito/mosquito;

Disease associated with specimen J
Typhoid; plague; dysemtery; cholera; diaorrhea.
Diseases associated with specimen K

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