Starch storing plastids are called ...................

Explanation

**Step-by-Step Solution:**

1. **Understanding Plastids**: Plastids are double membrane-bound organelles found in plant cells. They are involved in the synthesis and storage of various chemical compounds.

2. **Types of Plastids**: Plastids can be classified into three main types based on the pigments they contain:
- **Chloroplasts**: These are green plastids that contain chlorophyll and are involved in photosynthesis.
- **Chromoplasts**: These are colored plastids that contain various pigments, giving fruits and flowers their colors.
- **Leucoplasts**: These are colorless plastids that do not contain pigments.
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