Name the main as well as accessory chambers of heart of frog.

Explanation

### Step-by-Step Solution:

1. **Identify the Main Chambers of the Frog's Heart**:
- The heart of a frog consists of three main chambers: two upper chambers called auricles (or atria) and one lower chamber called the ventricle.
- Therefore, the main chambers are:
- **Auricles (2)**
- **Ventricle (1)**

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