Its leaves can be stimulated by the outside world to close, and then re-open, as if shy.The reason why it can be shy, because of its leaf structure, can have a "turgor effect", the lower part of the leaflet connected to the petiole has a special structure, this structure can determine whether the leaf is closed or open, that is, the pulvinus, which is filled with many parenchyma cells, with some cell fluid.When stimulated by the outside world, the leaves will vibrate, at this time, the water inside the pulvinus flows to other places, and the lower part of the pulvinus deflates, which will cause the petiole to droop and close.When the external stimulus disappears, water flows back to the pulvinus, causing it to fill with water again, and its leaves will open again.
Mimosa leaves produce closure, mainly by external stimulation, when people touch the leaves with their fingers, it will cause the leaves to vibrate and shrink.In addition to people touching with their hands, when they are stimulated by rainstorms, the leaves are closed to reduce the damage of rainstorms.And when insects climb up to eat leaves, they will also produce the situation of closing leaves.
