The physical process involved in the released of molecular oxygen frrom leaves is

Options

A. Diffusion
B. Tranpiration
C. Osmosis
D. Capillarity

Answer

To solve the question regarding the physical process involved in the release of molecular oxygen from leaves, we will analyze the options provided: diffusion, transpiration, osmosis, and capillarity.

### Step-by-Step Solution:

1. **Understanding the Process of Oxygen Release**:
- The release of oxygen from leaves primarily occurs during photosynthesis, where plants take in carbon dioxide and release oxygen as a byproduct.

2. **Analyzing the Options**:
- **Diffusion**: This is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the context of leaves, oxygen produced during photosynthesis diffuses out of the leaf through small openings called stomata.
- **Transpiration**: This refers to the loss of water vapor from the plant, primarily through stomata. While transpiration is important for water movement and nutrient uptake, it is not directly involved in the release of oxygen.
- **Osmosis**: This is the movement of water across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration. Osmosis is not related to the release of oxygen.
- **Capillarity**: This refers to the ability of water to rise in narrow tubes due to adhesion and cohesion. It is important for water transport in plants but does not pertain to the release of oxygen.

3. **Conclusion**:
- The correct answer is **Diffusion**, as it is the physical process that allows for the movement of oxygen from the inside of the leaf to the outside environment through the stomata.

### Final Answer:
The physical process involved in the release of molecular oxygen from leaves is **Diffusion**.

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