Photosynthesis - Jamb Biology Past Questions and Answers

Question 11:

• JAMB 1986

Oxygen liberated during photosynthesis has been demonstrated to come from

A. Carbondioxide
B. Air
C. Water
D. Chlorophyll

Question 12:

• JAMB 1987

In the standard experiment to show that oxygen is given off during photosynthesis, sodium bicarbonate is used to

A. Neutralize the acid in water
B. Supply mineral salt to water plant
C. Supply carbondioxide for photosynthesis
D. Kill micro-organisms in water

Question 13:

• JAMB 1990

The first step in the process of photosynthesis is the

A. Activation of the chlorophyll
B. Photolysis of water
C. Reduction of carbondioxide
D. Formation of sugar

Question 14:

• JAMB 1991

Which of the following is formed immediately after the first product of photosynthesis?

A. Lipid
B. Starch
C. Oxygen
D. Sugar

Question 15:

• JAMB 1992

The major site of photosynthesis in the leaf is the

A. Palisade parenchyma
B. Mesophyll parenchyma
C. Upper epidermis
D. Lower epidermis