A thick-strand of underground hyphae resembling a root is known as …………

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the name of a structure that is a thick strand of underground hyphae that resembles a root.

2. **Identifying the Structure**: In the kingdom Fungi, various structures are formed by hyphae. Hyphae are the thread-like filaments that make up the body of fungi.

3. **Recognizing the Specific Structure**: Among these structures, there is one specific type that is thick and resembles roots. This structure is known as a "Rhizomorph."

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