Cyanobacteria is the new name of :-

Options

A. Mycoplasma
B. Green algae
C. Blue green algae
D. Red algae

Answer

**Step-by-Step Solution:**

1. **Understanding Cyanobacteria**: Cyanobacteria, commonly known as blue-green algae, are photosynthetic organisms that are often found in aquatic environments. They are unique because they perform photosynthesis like plants but are classified as prokaryotes.

2. **Classification of Cyanobacteria**: In the context of biological classification, Cyanobacteria were previously referred to as "Myxophyceae" or "Mycophyce." However, according to the Frisch Classification, they are now referred to as "Sinophyce."

3. **Characteristics of Cyanobacteria**: Cyanobacteria are characterized by their thallus-like body structure, which is why they are also classified under the group "Thalophyta." They do not have a well-defined nucleus, which is a key characteristic of prokaryotic organisms.

4. **Identifying the Correct Option**: The question asks for the new name of Cyanobacteria among the options provided: Eukaryota, Mycota, Thalophyta, or Prokaryota. Given that Cyanobacteria are now classified under "Thalophyta" as per the new classification, the correct answer is "Thalophyta."

5. **Final Answer**: Therefore, the new name of Cyanobacteria is **Thalophyta**.

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