Question

Jane described two substances which participate in photosynthesis.

Substance A: Combines with water
Substance B: Gaseous product formed

Which statement is correct?

Substance A is chlorophyll and Substance B is oxygen.
Substance A is oxygen and Substance B is carbon dioxide.
Substance A is glucose and Substance B is carbon dioxide.
Substance A is carbon dioxide and Substance B is oxygen.

Answer 1

Answer: -

Substance A is carbon dioxide and Substance B is oxygen.

Explanation: -

Photosynthesis reaction involves the process of conversion of light energy of the sun into chemical energy by the green chlorophyll found in plants leaves.

The chemical equation for the process is

6 CO₂ +6 H₂O → C₆H₁₂O₆ + 6O₂

As we can see Carbon dioxide CO₂ reacts with water H₂O to form glucose. Oxygen is the gaseous product formed.

Thus Substance A is carbon dioxide and Substance B is oxygen.