Onion shows both stem modification and leaf modification. Explain.

Explanation

**Step-by-Step Solution:**

1. **Understanding Onion Structure**: Onions are unique plants that exhibit both stem and leaf modifications. To understand this, we need to look at the structure of the onion.

2. **Stem Modification**: The stem of the onion is modified into a condensed, disc-like structure known as a bulb. This bulb is the part of the onion that we typically eat. The bulb serves as a storage organ for nutrients and energy, allowing the plant to survive adverse conditions.

3. **Leaf Modification**: The leaves of the onion are modified into dry, scaly leaves that cover the bulb. These outer leaves are not green like typical leaves; instead, they are protective and help to keep the bulb safe from environmental factors such as pests and diseases.

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