Kappa paritcvles are present in

Options

A. Mirabilis jalapa
B. Zea mays
C. Limnaea peragra
D. Paramecium aurelia

Answer

**Step-by-Step Solution:**

1. **Understanding Kappa Particles**: Kappa particles are specific types of cytoplasmic structures found in certain organisms. They are known for their role in genetic inheritance and are associated with the phenomenon of "killer" strains.

2. **Identifying the Organism**: The question lists several organisms: Mirabilis jalapa, Zemes, Lemnia peregra, and Paramecium aurelia. We need to determine which of these contains kappa particles.

3. **Historical Context**: In 1938, a scientist named P.M. Sonborn discovered that certain strains of Paramecium aurelia contain kappa particles. This discovery is significant because it links kappa particles to the genetic characteristics of the organism.

4. **Characteristics of Kappa Particles**: Kappa particles are approximately 2 micrometers in diameter and contain both DNA and protein. This composition is crucial for their function and role in the organism.

5. **Conclusion**: Based on the historical discovery and the characteristics of kappa particles, we conclude that kappa particles are present in Paramecium aurelia.

**Final Answer**: Kappa particles are present in Paramecium aurelia.

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