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WHAT ARE TENDRILS?
A tendril is a slender stem- or petiole-like structure that is used by vines and lianas (climbing plants) to wrap around or to hook a support.  (Example: grape ivy, Cissus rhombifolia), forming a tangled or fishnet-like shoot.
The tendril is, in most cases, a flexible modified shoot, for example, a modified leaf or portion of a leaf, for which thin blade never forms while the central axis elongates greatly via apical and especially intercalary growth.


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