The cyanobacteria are also referred to as:-

Options

A. Slime moulds
B. Blue green algae
C. Protists
D. Golden algae

Answer

**Step-by-Step Solution:**

1. **Understanding Cyanobacteria**: Cyanobacteria are a group of prokaryotic organisms that are capable of photosynthesis. They are often found in aquatic environments.

2. **Identifying the Common Name**: Cyanobacteria are commonly referred to as "blue-green algae." This name comes from their color and their ability to perform photosynthesis, similar to algae.

3. **Distinguishing from Other Options**: The other options provided are slime molds, protists, and golden algae. It's important to note that:
- Slime molds and golden algae are eukaryotic organisms, while cyanobacteria are prokaryotic.
- Protists is a kingdom that includes various eukaryotic organisms, but cyanobacteria do not belong to this group.

4. **Conclusion**: Based on the characteristics and classification of cyanobacteria, the correct answer to the question is that cyanobacteria are also referred to as "blue-green algae."

**Final Answer**: Cyanobacteria are also referred to as blue-green algae.

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