Name a fungus which is found both in unicellular and mycelial states.

Explanation

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for a fungus that exists in both unicellular and mycelial forms. Unicellular means it is made up of a single cell, while mycelial refers to the multicellular, filamentous structure of fungi.

2. **Identifying the Fungus**: The fungus that fits this description is **Candida albicans**. This organism is known to exist in both forms: as a yeast (unicellular) and as a mycelium (multicellular).

3. **Characteristics of Candida albicans**:
- **Unicellular State**: In its yeast form, Candida albicans is a single-celled organism that can reproduce by budding.
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