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How do many passion-flower plants climb?
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Malpighiales
Weeping willow (Salix babylonica).
Many passion-flower plants (Passiflora) climb by using specialized organs called tendrils.
These slender, threadlike structures are prehensile and highly sensitive to contact. When a tendril brushes against an object, it curves toward and wraps around it, allowing the plant to anchor itself and climb. Over time, the tendrils develop strong mechanical tissue known as sclerenchyma, which provides the necessary support to hold the weight of the vine.12