The leaves of the mimosa protect themselves by performing a disappearing act.
When a grasshopper or a locust lands on the plant, the rows of feathery, small leaflets that rise from either side of the mimosa's stems, suddenly fold upwards and appear like unappetising twigs. If this does not make the insect lose interest and fly away, the leaves make a downward movement to expose their thorny stems, thus baffling the insect and driving it away.
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