Which one of the following plants does not show plasticity?

[Image showing heterophylly as an example of plasticity in Larkspur]Plasticity is the ability of a plant to form different structures in response to environment or life phases. Common examples of heterophylly (environmental/phase-related plasticity) include Cotton, Coriander, Larkspur, and Buttercup. Maize does not exhibit this type of plasticity.