Plasticity

Pilewort exhibits great phenotypic plasticity, its size and growth habit varying wildly on different sites.

As the monkeys became more skilled at using their brains to move their virtual arms, researchers saw signs of brain plasticity or neuronal growth, a possible sign the monkeys were incorporating the virtual arms into their own mental image.

In place of a stinger, a male bee or wasp has hardened genitalia […] used for grasping the female during mating and transferring sperm. Male genitalia are a showcase of structural plasticity.