Waec Biology 1999 Past Questions and Answers

Question 46:

• WAEC 1999

Which of the following factors may not affect living organisms in an aquatic habitat?

A. Turbidity
B. Temperature
C. Humidity
D. Light

Question 47:

• WAEC 1999

Which of the following parasites is a flatworm?

A. Plasmodium
B. Trypanosoma
C. Ascaris
D. Schistosoma

Question 48:

• WAEC 1999

During prolonged exercises, glucose in the muscle is convened to

A. Pyruvic acid
B. Lactic acid
C. Co- enzyme
D. Ethanol

Question 49:

• WAEC 1999

Which of the following is an effect of carbon monoxide on man?

A. Irritating the skin
B. Reducing oxygen carrying capacity of blood
C. Causing gene mutation
D. Destroying white blood cells.

Question 50:

• WAEC 1999

Which of the following is a renewable natural resources?

A. Air
B. Timber
C. Soil
D. Mineral