Book lungs are the respiratory organs found in

Options

A. (a) cockroach
B. (b) crustaceans
C. (c) millipedes
D. (d) scropions

Answer

**Step-by-Step Solution:**

1. **Understanding Book Lungs**: Book lungs are specialized respiratory organs that resemble the pages of a book. They consist of thin, flat structures called lamellae that facilitate gas exchange.

2. **Identifying Organisms with Book Lungs**: To determine which organisms possess book lungs, we need to look at the options provided and their known respiratory systems.

3. **Analyzing the Options**:
- **Option A: Cockroach**: Cockroaches have a respiratory system that consists of tracheae, not book lungs.
- **Option B: Crustaceans**: Crustaceans like crabs and prawns have book gills, which are different from book lungs.
- **Option C: Millipedes**: Millipedes also possess tracheae for respiration, not book lungs.
- **Option D: Scorpions**: Scorpions are known to have book lungs as their respiratory organs.

4. **Conclusion**: Based on the analysis, the correct answer is **D: Scorpions**, as they are the organisms that possess book lungs.

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