Polyp and .............. are two forms of Phylum Cnidaria.

Answer

**Step-by-Step Solution:**

1. **Identify the Phylum**: The question asks about two forms of the Phylum Cnidaria. Cnidaria is known for its simple body structure and the presence of specialized cells called cnidocytes.

2. **Recognize the Forms**: The two main forms of Cnidarians are the polyp and another form. The polyp is one of these forms, which is typically cylindrical and can exist either as a solitary organism or in colonies.

3. **Determine the Other Form**: The other form of Cnidarians is known as the Medusa. The Medusa is characterized by its umbrella-like shape and is usually free-swimming.

4. **Conclusion**: Therefore, the two forms of Phylum Cnidaria are the polyp and the Medusa.

**Final Answer**: Polyp and Medusa are two forms of Phylum Cnidaria.

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