Waec Biology 1996 Past Questions and Answers

Question 31:

• WAEC 1996

Which of the following processes is not due to interaction between the biotic and abiotic components of an
ecosystem?

A. Soil nutrient depletion
B. Condensation
C. Decomposition
D. Osmosis
E. Photosynthesis

Question 32:

• WAEC 1996

The entire habits and habitat of an organism can be described as its

A. Ecological community
B. Ecological niche
C. Habitat factor
D. Biotic factor
E. Abiotic factor

Question 33:

• WAEC 1996

Which of these is not a true characteristic of the tropical rain forest?

A. Vegetation consists predominantly of tall trees, with thick canopy
B. Forest is rich in epipphysis and climbers
C. Annual rainfall is less than 100 cm
D. Interior has low light intensity, high humidity and damp floor
E. Fruits of trees are often large-sized and are generally without adaptation to wind dispersal

Question 34:

• WAEC 1996

The frequency of andropogon in a grass lawn is 90 100. Throws were made with 1 meter square quadrat.
What is the density of andropogon in the field?

A. 0.09 per m²
B. 090 per m²
C. 9.0 per m²
D. 90 per m²
E. 900 per m²

Question 35:

• WAEC 1996

Which of the following is the correct method of collecting soil organism?

A. Heating the soil sample in an oven
B. Aerating the soil sample
C. Refrigerating the soil for some hours
D. Pouring hot water on the soil to enable the organism float
E. Placing a lighted electric bulb over soil in a funnel