Respiratory pigment in insects is

Options

A. Hemocyannin
B. Hemoglobin
C. Hemoerythrin
D. None of these

Answer

To solve the question regarding the respiratory pigment in insects, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Respiratory Pigments**:
- Respiratory pigments are molecules that transport oxygen in the body. Common examples include hemoglobin and hemocyanin.

2. **Identifying the Options**:
- The options given are:
- A) Hemokinin
- B) Hemoglobin
- C) Hemoheritin
- D) None of these

3. **Analyzing Insect Respiration**:
- Insects have a unique respiratory system that does not rely on blood for oxygen transport. Instead, they use a network of tubes called tracheae that deliver oxygen directly to their tissues.

4. **Presence of Pigments in Insect Blood**:
- Insects do not have hemoglobin (the common respiratory pigment found in many animals) in their blood. Their blood (hemolymph) does not contain respiratory pigments because oxygen is delivered directly to cells via the tracheal system.

5. **Conclusion**:
- Since insects do not utilize any of the respiratory pigments listed in the options for oxygen transport, the correct answer is option D) None of these.

### Final Answer:
- The respiratory pigment in insects is **D) None of these**.

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