What are the important events and end products of the light reactions?

Explanation

### Step-by-Step Solution:

1. **Excitation of Chlorophyll**:
- The light reactions begin with the absorption of light by chlorophyll molecules in the thylakoid membranes of chloroplasts. This light energy excites the chlorophyll, causing it to emit a pair of electrons.

2. **Photophosphorylation**:
- The energy from the excited electrons is used to convert ADP (adenosine diphosphate) and inorganic phosphate (Pi) into ATP (adenosine triphosphate). This process is known as photophosphorylation.

...