Why does burdock stick to clothing?

Burdock sticks to clothing due to its burrs, which are covered in tiny, hook-like barbs. These barbs easily latch onto fabric and fur, allowing the seeds to disperse by hitching a ride on animals or humans. This adaptation helps the plant spread its seeds over a wider area, aiding in its reproduction. The burrs' design is a natural example of how plants utilize physical mechanisms for survival and propagation.