WAEC Biology Past Questions And Answers - Biology

Waec Biology Questions

Question 181:

WAEC 1991

Predators are beneficial in pest control because they

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A Are natural enemies of small mammals
B Devour farm animals
C Feed on pests of crops
D Prey on game animal
E Compete for food with the pests

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Question 182:

WAEC 1991

I.Plasmodium II. Vibro Choleroe III. Gonococcus sp IV. Poliomyelitis virus V. Syphilis bacteria
which of the following organism are transmitted by houseflies?

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A I and II only
B II and V only
C III and IV only
D II and IV only
E III and V only

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Question 183:

WAEC 1991

The practice of warming soup regularly as it concerns food preservation is essentially to

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A Retain the taste
B Help to break down cellulose
C Remove excess water
D Kill the bacteria in it
E Raise the temperature

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Question 184:

WAEC 1991

Agglutination occurs in blood transfusion when the

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A Donor and the recipient belong to the same blood group
B Same antibodies from donor and recipient fuse together
C Donor and the recipient belong to different race
D Recipient is not a universal recipient
E Antigens and anitbody in the donor and the recipient react

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Question 185:

WAEC 1991

Which of the following is not a way of conserving natural resources?

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A Controlling farming practice
B Establishing forest reserve
C Establishing of parks and gardens
D Encouraging poaching in game reserve
E Protecting endangered species

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