The scientist who created the group protista for both unicellular plants and animals is

Options

A. Haeckel
B. Pasteur
C. Lister
D. Koch.

Answer

To answer the question about the scientist who created the group Protista for unicellular plants and animals, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the name of the scientist who established the kingdom Protista, which includes both unicellular plants and animals.

2. **Identifying Key Terms**: The key terms here are "Protista," "unicellular plants," and "unicellular animals." This indicates that we are looking for a classification system that encompasses both types of organisms.

3. **Historical Context**: The classification of living organisms has evolved over time. The kingdom Protista was introduced to categorize organisms that did not fit neatly into the categories of plants, animals, or fungi.

4. **Finding the Scientist**: The scientist credited with coining the term "Protista" and establishing this group is Ernest Haeckel. He proposed this classification in the late 19th century.

5. **Understanding the Contributions of Haeckel**: Haeckel's classification was significant because it recognized the diversity of life forms that were neither clearly plant nor animal. He included organisms like diatoms, dinoflagellates, and euglena, which exhibit characteristics of both groups.

6. **Conclusion**: Based on the information gathered, the answer to the question is that the scientist who created the group Protista for both unicellular plants and animals is **Ernest Haeckel**.

### Final Answer:
The scientist who created the group Protista for both unicellular plants and animals is **Ernest Haeckel**.

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