In Whittaker's five kingdom system of classification, eukaryotes are placed in

Options

A. three kingdoms
B. two kingdoms
C. four kingdoms
D. all the five kingdoms

Answer

**Step-by-Step Solution:**

1. **Understand the Five Kingdoms**: In Whittaker's five kingdom system of classification, the kingdoms are Monera, Protista, Fungi, Plantae, and Animalia.

2. **Identify Eukaryotes**: Eukaryotes are organisms whose cells have a nucleus enclosed within membranes. This group includes a wide variety of organisms.

3. **Determine Which Kingdoms Contain Eukaryotes**:
- **Monera**: This kingdom includes prokaryotic organisms (bacteria), which are not eukaryotes.
- **Protista**: This kingdom consists of unicellular and simple multicellular organisms that are eukaryotic.
- **Fungi**: This kingdom includes yeasts, molds, and mushrooms, all of which are eukaryotic.
- **Plantae**: This kingdom includes all plants, which are eukaryotic.
- **Animalia**: This kingdom includes all animals, which are also eukaryotic.

4. **Count the Eukaryotic Kingdoms**: From the analysis, we see that the kingdoms that contain eukaryotes are Protista, Fungi, Plantae, and Animalia. This totals to four kingdoms.

5. **Conclusion**: Therefore, in Whittaker's five kingdom system of classification, eukaryotes are placed in four kingdoms.

6. **Select the Correct Option**: The correct answer to the question is option C, which states that eukaryotes are placed in four kingdoms.

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