Find out the example in which due to absence of respiratory pigment transport of respiratory gases does not takes place.

Options

A. Cockroach
B. Scoliodon
C. Frog
D. Human

Answer

To answer the question about an example where the absence of respiratory pigment leads to the non-transport of respiratory gases, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Respiratory Pigments**:
- Respiratory pigments are proteins that carry oxygen in the blood. The most common respiratory pigment in vertebrates is hemoglobin, while in some invertebrates, it can be hemocyanin or other pigments.

2. **Identifying Organisms**:
- We need to identify organisms that lack effective respiratory pigments. For example, cockroaches have hemocyanin instead of hemoglobin.

3. **Analyzing Cockroaches**:
- Cockroaches do not have hemoglobin; instead, they have hemocyanin, which is not as efficient in transporting oxygen as hemoglobin. In cockroaches, the respiratory gases are transported through a tracheal system rather than through blood.

4. **Conclusion**:
- The absence of hemoglobin in cockroaches leads to inefficient transport of respiratory gases. Thus, cockroaches serve as an example where the lack of a proper respiratory pigment results in inadequate gas exchange.

### Final Answer:
The example of an organism where the absence of respiratory pigment leads to the non-transport of respiratory gases is the cockroach.

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