Yes, an onion bulb is considered an organ. It's a modified storage organ that allows the onion plant to store food and survive through the winter. This is because the plant's leaves make food during photosynthesis, and some of that food is then stored in the bulb.
Many plants use modified roots, stems, and even leaves as storage organs. This means that they are specialized structures within the plant that perform a specific function.
The onion bulb's structure is actually an enlarged, underground stem. It's designed to hold the plant's food reserve, which allows it to survive until the conditions are right to grow again.
Examples of Other Storage Organs:
- Potatoes: These are modified stems that store starch.
- Carrots: These are modified roots that store sugars.
- Beets: These are modified roots that store sugars.
