Waec Biology 2014 Past Questions and Answers

Question 16:

• WAEC 2014

Older parts of plant roots do not normally absorb water because

A. They lack xylem
B. They have small surface area
C. The phloem is dead
D. They lack root hairs

Question 17:

• WAEC 2014

The amount of starch in a germinating seed decreases because the starch is used up

A. For respiration and building up of cells
B. To build cellulose cell wall
C. To develop meristematic tissues
D. For the production of enzymes

Question 18:

• WAEC 2014

The purpose of treating poor soil with lime is to increase the quantity of

A. Nitrogen
B. Phosphorus
C. Carbohydrates
D. Sulphur

Question 19:

• WAEC 2014

A meal consisting of yam and a lot of vegetables is not balanced because it does not contain

A. Carbohydrates
B. Proteins
C. Vitamins
D. Minerals

Question 20:

• WAEC 2014

In a Biuret test , some protein was mixed with sodium hydroxide solution. Which of the following chemicals should be added to the mixture for a positive result?

A. Mercurous nitrate
B. Copper sulphate
C. Sodium carbonate
D. Silver nitrate