Protista contains

Options

A. Euglena, Dinoflagellates and Yeast
B. Amoeba, Paramaecium, Hydra
C. Euglena, Paramaecium, Mushroom
D. Amoeba, Paramaecium and Dinoflagellates/Diatoms.

Answer

### Step-by-Step Solution:

1. **Understanding Kingdom Protista**:
- Kingdom Protista is a diverse group of unicellular eukaryotic organisms. It includes organisms that can be plant-like, animal-like, or fungus-like.

2. **Classification Based on Nutrition**:
- Protists are classified based on their mode of nutrition into several groups:
- **Chrysophytes**: This group includes diatoms and golden algae (desmids), which are primarily photosynthetic.
- **Dinoflagellates**: Another group that also performs photosynthesis and is known for being significant producers in aquatic environments.
- **Euglena**: A unique organism that exhibits mixotrophic nutrition, meaning it can photosynthesize in the presence of sunlight but can also absorb nutrients like animals when light is not available.

3. **Other Groups in Protista**:
- **Slime Molds**: These are saprophytic organisms that feed on decaying organic matter.
- **Protozoan Protists**: These are animal-like protists that can be further classified based on their locomotion:
- **Amoeboid**: Move using pseudopodia (e.g., Amoeba).
- **Flagellated**: Move using flagella (e.g., Trypanosoma).
- **Ciliated**: Move using cilia (e.g., Paramecium).
- **Sporosomes**: Have a spore-like stage and are generally non-motile.

4. **Evaluating Options**:
- **Option 1**: Euglena, dinoflagellate, and yeast. (Yeast is a fungus, not a protist - Incorrect)
- **Option 2**: Amoeba, paramecium, and hydra. (Hydra is an animal - Incorrect)
- **Option 3**: Mushroom (a fungus, not a protist - Incorrect)
- **Option 4**: Amoeba, paramecium, dinoflagellates, and diatoms. (All are protists - Correct)

5. **Conclusion**:
- The correct answer is **Option 4**: Amoeba, Paramecium, Dinoflagellates, and Diatoms.