Jane described two substances which participate in photosynthesis

Substance A: Combines with water

Substance B: Gaseous product formed

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

Substance a is carbon dioxide and substance b is oxygen

Explanation:

Photosynthesis is a distinct metabolical (anabolism) process that occurs in autotrophic organisms like plants, phytoplanktons etc. It is the process whereby food in form of an organic molecule (glucose) is produced by combining carbondioxide (CO2) and water (H2O) in the presence of sunlight.

The photosynthetic process is unique to autotrophs because of their ability to capture energy from sunlight using their Chlorophyll pigment. The process of photosynthesis occurs in the Chloroplast where Carbondioxide, water, and light energy are needed to synthesize glucose and release oxygen gas in the process. The overall equation of photosynthesis is:

6C02 + 6H2O + light > C6H12O6 + 6O2

Hence, according to the question;

Substance A reacts with water meaning that substance A is Carbondioxide (CO2).

Substance B is a gaseous product formed, meaning substance B is the released oxygen gas.