The reduction process of `CO_(2)` and ATP formatioin in plants has relationship. In this reaction , ATP is

Options

A. Formed
B. Utilized
C. Not utlized
D. None of these

Answer

### Step-by-Step Solution:

1. **Understanding the Photosynthesis Process**: Photosynthesis consists of two main phases: the light reactions and the dark reactions (Calvin cycle). The light reactions occur in the thylakoid membranes (grana), while the dark reactions occur in the stroma.

2. **Light Reactions**: During the light reactions, two types of photophosphorylation occur: cyclic and non-cyclic (acyclic) photophosphorylation.
- In cyclic photophosphorylation, only ATP is produced.
- In non-cyclic photophosphorylation, both ATP and NADPH2 (a reduced coenzyme) are produced.

3. **Products of Light Reactions**: The main products of the light reactions are ATP and NADPH2. These products are essential for the subsequent reactions in the Calvin cycle.

4. **Calvin Cycle**: The Calvin cycle is where carbon dioxide is reduced to form sugars. In this cycle:
- NADPH2 acts as the reducing agent.
- ATP provides the energy (assimilatory power) necessary for the reduction process.

5. **Role of ATP in Carbon Dioxide Reduction**: In the context of the reduction of carbon dioxide during the Calvin cycle:
- ATP is not formed during this process; instead, it is utilized to drive the reactions forward.
- Therefore, ATP is consumed in the Calvin cycle to facilitate the reduction of carbon dioxide.

6. **Conclusion**: The correct relationship is that ATP is utilized in the reduction process of carbon dioxide in plants.

### Final Answer:
In the reduction process of CO2 in plants, ATP is utilized.

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