According to R.H. Whittaker in which kingdom included producer, decomposer and consumer:-

Options

A. Plantae
B. Fungi
C. Protista
D. Animalia

Answer

**Step-by-Step Solution:**

1. **Understanding R.H. Whittaker's Classification**: R.H. Whittaker proposed a five-kingdom classification system which includes the kingdoms: Monera, Protista, Fungi, Plantae, and Animalia.

2. **Identifying Producers, Decomposers, and Consumers**:
- **Producers**: Organisms that can produce their own food, usually through photosynthesis (e.g., plants).
- **Decomposers**: Organisms that break down dead and decaying organic matter to obtain nutrients (e.g., fungi and certain bacteria).
- **Consumers**: Organisms that cannot produce their own food and must consume other organisms for energy (e.g., animals).

3. **Analyzing Each Kingdom**:
- **Monera**: Includes prokaryotic organisms (bacteria) that can be autotrophic (producers) or heterotrophic (consumers).
- **Protista**: This kingdom includes unicellular eukaryotes. It contains:
- Producers like diatoms and golden algae.
- Decomposers like slime molds.
- Consumers like protozoans.
- **Fungi**: Primarily heterotrophic (decomposers) and do not have autotrophic members.
- **Plantae**: Mostly autotrophic (producers) and do not include decomposers or consumers.
- **Animalia**: Primarily heterotrophic (consumers) and does not include producers or decomposers.

4. **Conclusion**: The kingdom that includes producers, decomposers, and consumers is **Kingdom Protista**.

5. **Final Answer**: According to R.H. Whittaker, the kingdom that includes producers, decomposers, and consumers is **Kingdom Protista**.

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