Waec Biology 2018 Past Questions and Answers

Question 26:

• WAEC 2018

The duodenum of a person was surgically removed. Which of the following substances would have their digestion affected?

A. Starch and protein only
B. Starch and lipids
C. Starch, peptones and maltose
D. Starch, protein and lipids

Question 27:

• WAEC 2018

Which of the following dental formulae represents the dentition in rabbits?

A. \(I\frac{2}{1}\) \(C\frac{0}{0}\) \(P\frac{3}{2}\) \(M\frac{3}{3}\)
B. \(I\frac{2}{2}\) \(C\frac{1}{1}\) \(P\frac{2}{2}\) \(M\frac{3}{3}\)
C. \(I\frac{1}{2}\) \(C\frac{0}{0}\) \(P\frac{2}{3}\) \(M\frac{3}{3}\)
D. \(I\frac{2}{1}\) \(C\frac{0}{1}\) \(P\frac{3}{2}\) \(M\frac{3}{3}\)

Question 28:

• WAEC 2018

The diagram above is an illustration of an experimental set-up to demonstrate a property of soil. The property of soil demonstrated is

A. Particle size
B. Capillarity
C. Colour
D. Texture

Question 29:

• WAEC 2018

Which of the following statements would be a correct observation at the end of the experiment? Water moves

A. Highest in sandy soil
B. Lowest in loamy soil
C. To the same level in all soil types
D. Highest in clayey soil

Question 30:

• WAEC 2018

The most important factor(s) that influence(s) the ecological niche of an organism is/ are the

A. Water, light and predator-prey relationship
B. Food and water availability
C. Physical environment
D. Competition for food and space