Theca or lorica is covering found in

Options

A. Dinoflagellates
B. Diatoms
C. Euglenoids
D. Heliozoans

Answer

To answer the question "Theca or lorica is covering found in," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**: The terms "theca" and "lorica" refer to protective coverings or shells found in certain organisms.

2. **Identify the Organisms**: The question asks about the organisms that possess these coverings. We need to focus on the category of organisms where these structures are commonly found.

3. **Focus on Protozoans**: The transcript mentions that theca or lorica is primarily seen in protozoans. Protozoans are a diverse group of unicellular eukaryotic organisms.

4. **Specific Example**: Among protozoans, dinoflagellates are specifically mentioned as having a theca or lorica. Dinoflagellates are a group of flagellate protists that are known for their unique cell coverings.

5. **Conclusion**: Based on the information, we can conclude that theca or lorica is found in dinoflagellates.

### Final Answer:
Theca or lorica is covering found in **dinoflagellates**.

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