Waec Biology 1991 Past Questions and Answers

Question 36:

• WAEC 1991

Which of the following would be the primary producer in a food chain?

A. Saprophytes
B. Herbivores
C. Carnivores
D. Green plants
E. Parasites

Question 37:

• WAEC 1991

fewer number of trees is characteristic of the Savanna zones of Nigeria because

A. There is too much sunlight
B. There is limited amount of rainfall
C. They are usually exposed to grazing animals
D. They are covered by high mountains
E. The farmers always engage in bush-burning

Question 38:

• WAEC 1991

The number of individuals in a habitat in relation to the unit space available to each organism is referred to as the

A. Birth rate
B. Density
C. Mortality
D. Frequency
E. Dispersion

Question 39:

• WAEC 1991

which of the following will be the effect of waterlogged top soil on the roots of plants?

A. The waterlogged soil will stimulate rapid growth of roots
B. There will be abundant supply of air for the growth of roots
C. The roots will absorb water i rapidly
D. There willl be an accumulation of plant nutrients
E. The roots will be starved of air

Question 40:

• WAEC 1991

Which of the following is the unit of transmission of hereditary traits in living organisms

A. Nucleus
B. Nucleolus
C. Gametes
D. Genes
E. Chromosomes