Whittaker proposed

Options

A. Two kingdom classification
B. Five kingdom classification
C. Four kingdom classification
D. Three kingdom classification.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the classification system proposed by Whittaker.

2. **Identifying the Options**: The options provided are:
- Two kingdom classification
- Five kingdom classification
- Four kingdom classification
- Three kingdom classification

3. **Recalling Historical Context**:
- The two kingdom classification was proposed by Carl Linnaeus.
- The three kingdom classification was proposed by Ernst Haeckel.
- The four kingdom classification was proposed by Copeland.

4. **Identifying Whittaker's Contribution**:
- R. H. Whittaker is known for proposing the five kingdom classification system.

5. **Listing the Five Kingdoms**:
- Whittaker classified living organisms into five kingdoms:
1. Monera (unicellular prokaryotes)
2. Protista (unicellular eukaryotes)
3. Fungi (mostly multicellular eukaryotes, except for yeast)
4. Plantae (multicellular eukaryotes that are autotrophic)
5. Animalia (multicellular eukaryotes that are heterotrophic and lack cell walls)

6. **Conclusion**: Based on the information, the correct answer to the question is the five kingdom classification proposed by Whittaker.

**Final Answer**: Whittaker proposed the five kingdom classification.

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