Bulk of oxygen diffuses from the plasma into the red blood corpuscles where it joins loosly with `Fe^(2+)` ions of hemoglobin `(Hb)` to form bright red oxyhaemoglobin `(HbO_(2))`. The process is called

Options

A. oxidation
B. oxgenation
C. hydration
D. dehydrogenation

Answer

To solve the question regarding the process by which oxygen diffuses from plasma into red blood corpuscles and forms oxyhemoglobin, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding the Context**: The question describes a physiological process where oxygen moves from the plasma (the liquid component of blood) into red blood cells (RBCs).

2. **Identifying the Reaction**: In this process, oxygen (O₂) binds to hemoglobin (Hb), which contains iron ions (Fe²⁺). This binding forms a new compound known as oxyhemoglobin (HbO₂).

3. **Defining Key Terms**:
- **Oxidation**: This refers to a chemical reaction where a substance loses electrons. This does not apply to the process described.
- **Oxygenation**: This is the process of adding oxygen to a molecule or atom. In this case, it refers to oxygen binding to hemoglobin.
- **Hydration**: This involves the addition of water, which is not relevant to the oxygen binding process.
- **Dehydrogenation**: This is the removal of hydrogen from a molecule, which is also not applicable here.

4. **Analyzing the Process**: Since the question specifies that oxygen is joining with hemoglobin, we are looking for a term that describes the addition of oxygen to hemoglobin.

5. **Conclusion**: The correct term for the process where oxygen binds to hemoglobin is "oxygenation." Therefore, the answer to the question is option B: Oxygenation.

### Final Answer:
The process is called **Oxygenation** (Option B).

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