Four kingdom system of classification was given by

Options

A. Haeckel
B. Linnaeus
C. Copeland
D. Whittaker

Answer

To answer the question "Four kingdom system of classification was given by," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Classification**: The four kingdom system of classification refers to a method of organizing living organisms into groups based on their similarities and relationships.

2. **Identifying Key Scientists**: Several scientists have contributed to the classification systems over time. The key figures mentioned are:
- Ernst Haeckel
- Carl Linnaeus
- Robert Whittaker
- Herbert Copeland

3. **Reviewing Contributions**:
- **Ernst Haeckel** (1864): Proposed a three-kingdom classification (Plantae, Animalia, Protista).
- **Carl Linnaeus** (1735): Developed a two-kingdom system (Plantae and Animalia).
- **Herbert Copeland** (1956): Introduced a four-kingdom system, which included Monera, along with Plantae, Animalia, and Protista.
- **Robert Whittaker**: Proposed a five-kingdom system that included Fungi.

4. **Conclusion**: Based on the contributions of these scientists, the four kingdom system of classification was given by Herbert Copeland.

5. **Final Answer**: Therefore, the correct answer to the question is **Copeland**.