Waec Biology Past Questions and Answers

Question 1991:

• WAEC 2020

Which of the following substances is not a conservable natural resource ?

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

Question 1992:

• WAEC 2020

The diagram above illustrates an ecological instrument. Study it and answer the question below;

A disadvantage of the abiotic factor measured by the instrument is that it


A. Is an agent of pollination
B. Is necessary for germination
C. Leads to flooding when in excess
D. Is used for irrigation

Question 1993:

• WAEC 2020

The diagram below is an illustration of an ecological instrument. Study it an answer the question below;

When the instrument is in use, it is usually

A. Placed slightly above soil level
B. Placed on a table
C. Suspended in air
D. Suspended to moving water

Question 1994:

• WAEC 2020

Soil with the finest texture is

A. Silt
B. Clay
C. Sand
D. Gravel

Question 1995:

• WAEC 2020

The position occupied by an organism in food chain is the

A. Energy level
B. Niche
C. Trophic level
D. Biomass