Photosynthesis - Jamb Biology Past Questions and Answers

Question 21:

• JAMB 1996

Given the equation:
6CO2 + 6H2O → C6H12O6 + 6O2 {Under sunlight & Chlorophyll)
The oxygen given off during the above process is derived from

A. Sunlight
B. Chlorophyll
C. Carbon dioxide
D. Atmosphere
E. Water

Question 22:

• JAMB 1999

The dark reaction of photosynthesis involves

A. Fixation of carbon (IV) oxide to give six-carbon sugar
B. Fixation of carbon (IV) oxide with the help of oxygen
C. Use of carbon (IV) oxide to produce glucose using ATP
D. Fixation of carbon (IV) oxide on chlorophyll using hydrogen

Question 23:

• JAMB 2002

The experimental set-up can be used to demonstrate that

A. Light is necessary for photosynthesis
B. Oxygen is necessary for photosynthesis
C. Photosynthesis occurs in the leaves of plants
D. Carbon (IV) oxide is necessary for photosynthesis

Question 24:

• JAMB 2003

The dark reaction of photosynthesis involves the

A. Reduction of carbon(IV)oxide to organic
B. Release of oxygen and the splitting of water
C. Photolysis of water and the production of starch
D. Splitting of water into hydrogen

Question 25:

• JAMB 2005

The part of the plant where photosynthesis is least likely to take place is

A. I
B. II
C. III
D. IV