Saprophytic protists that form plasmodium are

Options

A. Fungi
B. Slime moulds
C. Sporozoans
D. Ciliates

Answer

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for saprophytic protists that form plasmodium. We need to identify the correct type of protist from the given options.

2. **Define Saprophytic Protists**: Saprophytic protists are organisms that feed on decaying organic matter. They release enzymes into their environment to break down complex organic substances into simpler forms, which they then absorb.

3. **Analyze the Options**:
- **Option A: Fungi**: Fungi are eukaryotic organisms but are not classified as protists. They are separate from the protist kingdom.
- **Option B: Slime Moulds**: Slime moulds are indeed saprophytic protists. They can move and engulf organic matter, and they can form a multicellular structure known as plasmodium.
- **Option C: Protozoans**: Protozoans are a large group of motile, unicellular organisms, but they do not typically form plasmodium.
- **Option D: Ciliates**: Ciliates are a group of protozoans characterized by hair-like structures called cilia. They are not saprophytic and do not form plasmodium.

4. **Identify the Correct Answer**: Based on the analysis, the correct answer is **Option B: Slime Moulds**, as they are the saprophytic protists that can form plasmodium.

5. **Conclusion**: The saprophytic protists that form plasmodium are slime moulds.