Which statement from below is correct regarding the five kingdom system of classification ?

Options

A. Kingdom Protista has brought together chlamydomonas and chlorella with Paramecium and Amoeba.
B. Kingdom Protista has brought together chlamydomonas and spirogyra with Paramecium and Amoeba.
C. Five kingdom system of classification brought together the prokaryotic bacteria and blue green algae with other groups which were eukaryotic.
D. Kingdom fungi has brought together all heterotrophic organisms .

Answer

To determine the correct statement regarding the five kingdom system of classification, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Understanding the Five Kingdom System**:
The five kingdom system of classification includes Monera, Protista, Fungi, Plantae, and Animalia. Each kingdom has distinct characteristics.

2. **Analyzing the First Statement**:
- **Statement**: Kingdom Protista has brought together Chlamydomonas and Chlorella with Paramecium and Amoeba.
- **Analysis**: Chlamydomonas and Chlorella are both unicellular eukaryotic algae, while Paramecium and Amoeba are unicellular eukaryotic protozoans. All these organisms belong to the kingdom Protista.
- **Conclusion**: This statement is **correct**.

3. **Analyzing the Second Statement**:
- **Statement**: Kingdom Protista has brought together Chlamydomonas and Spirogyra with Paramecium and Amoeba.
- **Analysis**: Spirogyra is a multicellular green algae, which means it does not belong in the same category as the unicellular organisms mentioned (Chlamydomonas, Paramecium, and Amoeba).
- **Conclusion**: This statement is **incorrect**.

4. **Analyzing the Third Statement**:
- **Statement**: The Five Kingdom System of Classification brought together the Prokaryotic Bacteria, Blue-Green Algae, with other groups which were Eukaryotes.
- **Analysis**: While Monera does include prokaryotic organisms like bacteria and blue-green algae, it does not mix them with eukaryotic groups. Each kingdom is distinct based on cellular structure.
- **Conclusion**: This statement is **incorrect**.

5. **Analyzing the Fourth Statement**:
- **Statement**: Kingdom Fungi has brought together all heterotrophic organisms.
- **Analysis**: While fungi are indeed heterotrophic, not all heterotrophic organisms are classified under Fungi. Heterotrophic organisms can also be found in Monera (like certain bacteria) and Animalia.
- **Conclusion**: This statement is **incorrect**.

### Final Conclusion:
The only correct statement regarding the five kingdom system of classification is the **first statement**, which accurately describes the organisms included in the kingdom Protista.