 | The plant: The living plant; The root |
 |  | The root |
| | Different kinds of roots |
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Adventitious roots
In some plants roots start from the stem above the soil, that is, above the collar, and afterwards go down into the earth.
• Adventitious roots grow above the collar.
For example, mangrove, bamboo, maize and rice all have adventitious roots.
A rice plant
• Soil put around the collar helps adventitious roots to grow; the plant is earthed up.
• A plant with roots on the stems has adventitious roots.
Earthing up encourages adventitious roots to develop
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