Classify the following plants into different plant divisions: Spirogyra, fern, Funaria, Pinus, apple tree and mustard plant.

Explanation

### Step-by-Step Solution:

1. **Identify the Plant Types**:
- We have six plants to classify: Spirogyra, fern, Funaria, Pinus, apple tree, and mustard plant.

2. **Classify Spirogyra**:
- Spirogyra is classified as an algae. Algae belong to the division **Thallophyta**.
- **Reason**: Thallophyta consists of simple plants that do not have true stems, leaves, or roots, and they lack a vascular system.
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