Waec Biology 1999 Past Questions and Answers

Question 31:

• WAEC 1999

Use the information below on factors required during photosynthesis to answer the two questions

I. CO² II. Chlorophyll III. Water IV. ATP V NADPH²


Which of the above factors can be a limiting factor for the process to proceed?

A. I and II only
B. I and III only
C. I and IV only
D. I, III and IV only

Question 32:

• WAEC 1999

Use the information below on factors required during photosynthesis to answer the two questions

I. CO² II. Chlorophyll III. Water IV. ATP V NADPH²


The factors required for the dark phase of photosynthesis are

A. III and IV only
B. III and V only
C. III, IV and V only
D. IV and V only

Question 33:

• WAEC 1999

In water- culture experiments the culture solutions are protected from sunlight in order to

A. Control the temperature of the culture solution
B. Prevent algae from growing in the solution
C. Prevent the minerals in the solution from being destroyed
D. Allow the minerals to be used up at room temperature

Question 34:

• WAEC 1999

The importance of a balanced diet is to

A. Maintain constant size of an animal
B. Provide good taste in the food
C. Increase the effectiveness of digestion
D. Provide good health for an individual

Question 35:

• WAEC 1999

The dentition of a herbivore is distinct from that of other animals due to the presence of

A. Diastema
B. Cusps on molar teeth
C. Canines
D. Ridges on molar teeth