Name a plant which does not have tissues.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a plant that does not have tissues. Tissues are groups of similar cells that perform a specific function.

2. **Identifying Types of Plants**: Generally, plants can be classified into two categories: multicellular and unicellular. Multicellular plants, like trees and flowers, have various types of tissues. Unicellular plants consist of a single cell and do not form tissues.

3. **Recognizing Unicellular Plants**: Since the question specifies a plant without tissues, we need to focus on unicellular plants.

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