Oxygen carrier or the respiratory pigment in blood of frog and other vertebrates is

Options

A. Myoglobin
B. Cytochrome
C. Hemoglobin
D. Hemocyanin

Answer

To answer the question regarding the oxygen carrier or respiratory pigment in the blood of frogs and other vertebrates, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the specific respiratory pigment found in the blood of frogs and other vertebrates.

2. **Identify the Options**: The options provided are:
- Myoglobin
- Cytochrome
- Hemoglobin
- Hemocyanin

3. **Analyze Each Option**:
- **Myoglobin**: This is a respiratory pigment found in muscle tissues, not in blood. It binds oxygen in muscle cells but does not transport oxygen in the bloodstream. Therefore, myoglobin is not the correct answer.
- **Cytochrome**: These are proteins involved in the electron transport chain and ATP production. They are not primarily responsible for oxygen transport in the blood. Thus, cytochrome is also incorrect.
- **Hemoglobin**: This is the primary oxygen-carrying protein in the blood of vertebrates, including frogs. Hemoglobin contains iron and can bind up to four oxygen molecules, making it essential for oxygen transport in the bloodstream. This makes hemoglobin the correct answer.
- **Hemocyanin**: This is a copper-containing pigment found in some invertebrates, such as crustaceans and mollusks, and is not present in vertebrates. Therefore, it is not the correct answer for frogs and other vertebrates.

4. **Conclude the Answer**: Based on the analysis, the correct answer to the question is **hemoglobin**.

### Final Answer:
The oxygen carrier or the respiratory pigment in the blood of frogs and other vertebrates is **hemoglobin**.

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