Algal fungi are placed in

Options

A. Ascomycetes
B. Basidiomycetes
C. Phycomycetes
D. Deuteromycetes

Answer

To determine where algal fungi are classified, we need to analyze the options provided:

1. **Escomycetes**: This group is known as sac fungi. They produce a structure called the ascus, which contains sexual spores. Since algal fungi do not fall under this category, this option is incorrect.

2. **Basidiomycetes**: This group is recognized for producing basidia, which are specialized structures that generate basidiospores (the reproductive spores). Algal fungi do not belong to this category either, making this option incorrect.

3. **Phycomycetes**: This is the correct classification for algal fungi. Phycomycetes are fungi that have evolved from certain green algae, specifically cephalocephalous green algae. They possess characteristics similar to algae, such as flagellated spores and movement patterns akin to those of algae.

4. **Deuteromycetes**: Also known as imperfect fungi, this group is characterized by the absence of a known sexual reproduction stage. Since algal fungi do not fit into this classification, this option is also incorrect.

Based on the analysis, the correct answer is **Phycomycetes**.

### Step-by-step Solution:
1. **Identify the groups**: Review the four options provided: Escomycetes, Basidiomycetes, Phycomycetes, and Deuteromycetes.
2. **Analyze Escomycetes**: Understand that they are sac fungi producing asci and do not include algal fungi.
3. **Analyze Basidiomycetes**: Recognize that they produce basidia and basidiospores, which do not include algal fungi.
4. **Analyze Phycomycetes**: Confirm that they evolved from green algae and share characteristics with algae, making them the correct classification for algal fungi.
5. **Analyze Deuteromycetes**: Note that they are termed imperfect fungi due to the unknown sexual stage, which does not include algal fungi.
6. **Conclude**: Based on the analyses, identify Phycomycetes as the correct classification for algal fungi.