How do burrs disperse?

Answer:
Burrs, which are seeds with rough hulls that have projecting spikes or hooks, use the projections to "latch onto" passing animals or people. The seeds then "hitch a ride" on these passers by to relocate (disperse).
First answer by Quirkyquantummechanic. Last edit by Quirkyquantummechanic. Contributor trust: 3691 [recommend contributor recommended]. Question popularity: 1 [recommend question].