MODULAR DESIGN. “On the first scale, learning occurs by parts of the plant without being regulated by the activity of the plant as a whole. The modular character of a plant in distinction to an animal is well established (though animals do have modularity as well). Localized activities happen in individual cells and are mediated in multicellular locales.”
http://link.springer.com/article/10.1007/s12304-013-9164-x