What is the basis of classification of algae ?

Explanation

### Step-by-Step Solution:

1. **Introduction to Algae Classification**:
- Algae are classified based on various characteristics that distinguish different groups. The primary basis for their classification includes the presence or absence of specific pigments.

2. **Classification Based on Pigments**:
- The main pigments that play a role in the classification of algae are chlorophylls and accessory pigments. These pigments determine the color of the algae and are crucial for photosynthesis.
- **Chlorophyceae (Green Algae)**:
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