Four kingdom system of classification was proposed by :-

Options

A. Whittaker
B. Copeland
C. Linnaeus
D. Oswald Tippo

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks who proposed the four kingdom system of classification.

2. **Evaluating the Options**: We need to analyze each option provided to identify the correct answer.

3. **Analyzing Whittaker**:
- Whittaker proposed a five kingdom classification system in 1969.
- Since he proposed five kingdoms, he cannot be the answer to our question about the four kingdom system.

4. **Analyzing Copland**:
- Herbert Copland proposed the four kingdom classification system in 1956.
- The four kingdoms he proposed are Monera (unicellular organisms), Protista, Plantae, and Animalia.
- This classification included a significant drawback: Fungi were placed in Plantae, which is incorrect as fungi have distinct characteristics that separate them from plants.

5. **Analyzing Other Options**:
- Linnaeus is known as the father of taxonomy and introduced the binomial nomenclature system but did not propose a four kingdom classification.
- Oswald Tippo divided plants into two subphyta but did not propose a four kingdom system either.

6. **Conclusion**: Based on the analysis, the correct answer to the question is Herbert Copland, who proposed the four kingdom system of classification.

**Final Answer**: Herbert Copland

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