Which one of the following set of organisms have no position in five kingdom system ?

Options

A. Virus, Viroids and Lichens
B. TMV,PPLO and Bacteria
C. Prions, Lichens and BGA
D. BGA,PPLO and Sac-fungi

Answer

To solve the question "Which one of the following set of organisms have no position in five kingdom system?", we will analyze each option provided.

### Step-by-Step Solution:

1. **Understand the Five Kingdom Classification**:
- The five kingdoms are:
- Monera (prokaryotes, e.g., bacteria)
- Protista (eukaryotic microorganisms, e.g., protozoa and algae)
- Fungi (eukaryotic organisms, e.g., mushrooms, yeasts)
- Plantae (plants)
- Animalia (animals)

2. **Analyze Each Option**:
- **Option A: Viruses, Viroids, and Lichens**:
- Viruses are acellular and do not fit into any of the five kingdoms as they cannot perform metabolic activities independently.
- Viroids are also acellular infectious agents and do not fit into the five kingdoms.
- Lichens are a symbiotic association of fungi and algae, thus they can be classified under Fungi and Protista.
- Conclusion: This option contains organisms (viruses and viroids) that have no position in the five kingdom system.

- **Option B: TMB, Pplo, and Bacteria**:
- TMB and Pplo are not standard biological terms and do not correspond to known organisms. Bacteria belong to Monera.
- Conclusion: This option is ambiguous due to TMB and Pplo.

- **Option C: Prions, Lichens, and BGA**:
- Prions are infectious proteins and do not fit into any of the five kingdoms.
- Lichens can be classified under Fungi and Protista.
- BGA (Blue-Green Algae) are classified under Monera.
- Conclusion: This option contains prions which have no position in the five kingdoms.

- **Option D: BGA, Pplo, and Sac Fungi**:
- BGA (Blue-Green Algae) belong to Monera.
- Sac fungi (Ascomycetes) belong to Fungi.
- Pplo is again not a recognized term.
- Conclusion: This option is ambiguous due to Pplo.

3. **Final Conclusion**:
- The organisms that have no position in the five kingdom system are found in Option A (Viruses, Viroids, and Lichens) and Option C (Prions, Lichens, and BGA). However, since the question asks for a set, the most clear answer is **Option A**.

### Final Answer:
**Option A: Viruses, Viroids, and Lichens** have no position in the five kingdom system.