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adventitious
Referring to a structure arising from an unusual place, such as stems from roots or roots from stems. Normally roots grow underground at the base of a plant. But some plants produce roots from their stems and branches. With ivy, for example, adventitious roots provide nourishment and anable the plant to cling onto other plants or buildings for support.
Related category
• BOTANY
Source: Raven, Peter H. and Johnson, George B. Biology (Fourth Edition). Wm. C. Brown Publishers
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