Which natural adaptation inspired the design of Velcro, one of the most widely used fastening systems in outdoor gear and everyday products?

The natural world has long been a source of inspiration for product designers seeking sustainable and efficient solutions. Biomimicry—studying nature's models and emulating them to solve human challenges—has revolutionized countless products across industries. This poll tests your knowledge about a groundbreaking product design that was directly inspired by a fascinating natural adaptation observed in our world's ecosystems.

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Burdock plant seeds with tiny hooks that cling to animal fur
Spider web's adhesive properties that remain sticky only on specific surfaces
Gecko feet's microscopic hairs that create van der Waals forces for climbing
Lotus leaf's self-cleaning hydrophobic surface that repels water and dirt