Jamb Biology 1997 Past Questions and Answers

Question 16:

• JAMB 1997

A food substance was treated with a few drops of Sudan III solution and a red coloration was obtained. The food contained

A. Protein
B. Starch
C. Fat
D. Mineral salt

Question 17:

• JAMB 1997

Oozing out of water from the leaves of plants in a humid environment is known as

A. Transpiration
B. Osmosis
C. Pinocytosis
D. Guttation

Question 18:

• JAMB 1997

The element that is essential for the coagulation of blood is

A. Potassium
B. Calcium
C. Phosphorus
D. Iron

Question 19:

• JAMB 1997

Anaerobic respiration differs from aerobic respiration by the production of

A. Less amount of energy and water
B. Greater amount of energy and alcohol
C. Less amount of energy and alcohol
D. Greater amount of energy and water

Question 20:

• JAMB 1997

Stomatal pores open when there is

A. An increase in the sugar content of guard cells
B. A decreases in the osmotic concentration of the guard cell
C. A decrease in the sugar content of mesophyll cells
D. An increase in the sugar content of mesophyll cells