Nastia is a transient response of certain organs of a plant with a stimulus of external and diffuse nature, based on processes of growth or change of turgor of groups of cells that vary their volume by controlling the entry and exit of the water; the resulting movement is not influenced by the direction of the stimulus. 1 2 are active, reversible movements and respond to a stimulus, they are not guided by him, that means that the plant may receive from any side the stimulus but this does not affect the direction in which it will react. It affects organs flat as the petals and tender leaves and organs of longitudinal growth, such as branches, leaves and tendrils. Are classified according to the stimulus that the desencadena.3Pueden be of several tipo:4 1
