Question

17 pts please help asap!!!
The chemical equation shown represents photosynthesis.
Carbon dioxide + A + light ---x---> B + oxygen.
What is the role of substance B in photosynthesis?
A. It stores chemical energy.
B. It converts light into chemical energy.
C. It traps light energy from the atmosphere.
D. It cools the atmosphere by changing into vapor.

Answer 1

A. It stores chemical energy
if not then it's B

Answer 2

Answer:

A. It stores chemical energy.

Explanation:

B here is nothing but glucose (C₆H₁₂O₆). Glucose is the ultimate product of photosynthesis. During photosynthesis, light energy of sun is converted into chemical energy which is stored in the chemical bonds of food (carbohydrate which is a polymer of glucose).

In the photosynthetic reaction, carbon dioxide molecule (CO₂) and water (H₂O) molecule react in the presence of sunlight to produce glucose and oxygen (O₂). The reaction is written as under:

                             

                                Sunlight

6 CO₂  +   6 H₂O          →             C₆H₁₂O₆+ 6 O₂