During photosynthesis , the oxygen from `CO_2` is incorporated into

Options

A. Option1 Oxygen gas
B. Option2 Water
C. Option3 Carbohydrates
D. Option4 `NADPH_2`

Answer

To solve the question, "During photosynthesis, the oxygen from CO2 is incorporated into," we will analyze the process of photosynthesis and the role of CO2 in it.

### Step-by-Step Solution:

1. **Understanding Photosynthesis**:
- Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy. This occurs primarily in the chloroplasts of plant cells.

2. **Role of CO2 in Photosynthesis**:
- During photosynthesis, carbon dioxide (CO2) is absorbed from the atmosphere. It is one of the key reactants in the process.

3. **The Photosynthesis Equation**:
- The overall equation for photosynthesis can be simplified as:
\[ 6CO_2 + 6H_2O \xrightarrow{\text{light energy}} C_6H_{12}O_6 + 6O_2 \]
- Here, glucose (C6H12O6) is produced, and oxygen (O2) is released as a byproduct.

4. **Incorporation of Oxygen**:
- The oxygen atoms from the CO2 molecule are incorporated into the glucose molecule during the Calvin cycle, which is part of the dark reactions of photosynthesis.

5. **Analyzing the Options**:
- **Option 1: Oxygen gas** - This is produced from water (H2O) during the light-dependent reactions, not from CO2.
- **Option 2: Water** - Water is a reactant, not a product of CO2 incorporation.
- **Option 3: Carbohydrates** - This is correct as the carbon from CO2 is incorporated into glucose (a carbohydrate).
- **Option 4: NADPH2** - This is an energy carrier produced during the light reactions but does not incorporate oxygen from CO2.

6. **Conclusion**:
- The correct answer is **Option 3: Carbohydrates**. The oxygen from CO2 is incorporated into carbohydrates during photosynthesis.