In photosynthesis , energy from light reaction to dark reaction is transferred in the form of

Options

A. ADP
B. ATP
C. RuDP
D. chlorophyll

Explanation

To answer the question "In photosynthesis, energy from light reaction to dark reaction is transferred in the form of," we can break down the process of photosynthesis into clear steps:

### Step-by-Step Solution:

1. **Understanding Photosynthesis**: Photosynthesis occurs in two main stages: the light reactions and the dark reactions (Calvin cycle).

2. **Light Reactions**: In the light reactions, which take place in the thylakoid membranes of chloroplasts, light energy is captured by chlorophyll and converted into chemical energy. This process produces two key energy carriers: ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate).

3. **Dark Reactions**: The dark reactions, also known as the Calvin cycle, occur in the stroma of the chloroplasts. These reactions do not require light directly but utilize the energy stored in ATP and NADPH produced during the light reactions to convert carbon dioxide into glucose.

4. **Energy Transfer**: The energy from the light reactions is transferred to the dark reactions primarily in the form of ATP and NADPH. Among the options provided (ADP, ATP, RuBP, and chlorophyll), ATP is the most significant energy carrier that is utilized in the dark reactions.

5. **Conclusion**: Therefore, the correct answer to the question is that energy from the light reaction to the dark reaction is transferred in the form of **ATP**.

### Final Answer:
The energy from the light reaction to the dark reaction is transferred in the form of **ATP**.

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