Which of the following are placed under Protista-

Options

A. Chryosophytes and Dinoflagellates
B. Euglenoids
C. Slime moulds and protozoans
D. All

Answer

**Step-by-Step Solution:**

1. **Understanding the Kingdom Protista**: The kingdom Protista includes a diverse group of mostly unicellular eukaryotic organisms. These organisms have a well-defined nucleus and can be autotrophic or heterotrophic.

2. **Identifying the Options**: The question presents four options:
- Option A: Chrysophytes and Dinoflagellates
- Option B: Euglenoids
- Option C: Slime molds and Protozoans
- Option D: All of the above

3. **Analyzing Each Option**:
- **Chrysophytes and Dinoflagellates**: Both of these groups are unicellular algae and are classified under Protista. Chrysophytes include golden algae, while dinoflagellates are known for their role in marine ecosystems.
- **Euglenoids**: This group includes organisms like Euglena, which are also unicellular and possess characteristics of both plants and animals. They are classified under Protista.
- **Slime Molds and Protozoans**: Slime molds are fungus-like protists, and protozoans are primarily unicellular organisms that exhibit animal-like behaviors. Both are included in the Protista kingdom.

4. **Conclusion**: Since all the mentioned groups (Chrysophytes, Dinoflagellates, Euglenoids, Slime molds, and Protozoans) fall under the kingdom Protista, the correct answer is option D: All of the above.

**Final Answer**: D. All of the above are placed under Protista.

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