Waec Biology Past Questions and Answers

Question 291:

• WAEC 1993

Which of the following is the underlining Principle in the adoption of biological control of pests?

A. Knowledge of agricultural practices by the farmer
B. Relationship between plants and animals
C. The presence of poisonous chemicals in the farm
D. The relative population of plants and animals in the farm
E. The predator prey relationship in ecological community

Question 292:

• WAEC 1993

The largest game reserve in Nigeria is the

A. Kianji game reserve in Niger state
B. Zamfara Forest Reserve In Sokoto state
C. Yankari game reserve in Bauchi state
D. Borgu park reserve in Niger state
E. Oban hill Game reserve in Cross River state

Question 293:

• WAEC 1993

The following agencies are responsible for conservation of in Nigeria except

A. Forest department
B. Nigerian conservation society
C. Games reserve authority
D. Nigerian red cross society
E. Ministry of agriculture and Natural resources

Question 294:

• WAEC 1993

The table below indicates the result of an experiment during which grains of different colours in two maize cobs were counted

Maize cob	White	Pink	Red
I	30	60	30
II	50	99	49

Which of the following ratios agrees with the result?

A. 9:3:3
B. 1:2:1
C. 1:3:1
D. 2:1:1
E. 2:3:2

Question 295:

• WAEC 1993

One of the factors that must be considered for safe blood transfusion is

A. Social class of the donor
B. Age of the recipient
C. Rhesus factors of the donor and the recipient
D. Nationality of the donor
E. Weight of the recipient