The 'Shameplant' instantly folds its leaves and hides when you touch it.

The secret to this movement is a tiny 'joint' at the base of each leaf called a pulvinus. When you touch the plant, it sends a tiny electrical signal through its body, just like a nerve signal in a human. This signal tells the plant to move potassium and water out of its cells instantly. Without the water pressure to hold them up, the leaves go limp and fold shut in just a few seconds.Scientists believe this is a clever defense. By folding up, the plant looks smaller and dead, which might trick a hungry insect into looking for a different snack. It can take about 15 to 30 minutes for the plant to pump the water back into the cells and stand up again. This takes a lot of energy, so the plant tries not to do it unless it has to.In 2014, a researcher named Monica Gagliano at the University of Western Australia discovered something even more amazing. She found that these plants could 'learn' that a certain touch wasn't a threat. After being dropped a few times without getting hurt, the plants stopped closing their leaves. This shows that even without a brain, plants can remember things and change their behavior!