explain in detail how does the touch-me-not plant moves its leaves in response to touch

The leaves of touch-me-not plant (Mimosa pudica) folds up in response to touch. This information is traveled from cell to cell by electrical chemical means. Mimosa has pad like swellings called pulvini at the base of each leaf. The folding up of the leaves of a sensitive plant on touching is due to the sudden loss of water from the pulvini.