On the streets of Mexico, many children can often be seen around vendors to buy a kind of "bean" with brown appearance and similar size to ordinary pine nuts. So what's so strange about this kind of beans? When you stand by and watch for a while, you will find that this bean will jump by itself! It belongs to the seeds of tropical plants and also belongs to Euphorbiaceae. But this bean has no long legs, but why does it jump?

This is because this kind of bean usually hides a bug-a moth-like larva. Due to the hypertrophy of the larva, the last pair of abdominal feet firmly grasped the inner wall of the seed. When its body arched upward quickly, the center of gravity of the seed would move up with the body, so the seed jumped up. The higher the temperature, the higher the seed jumps. However, after two months, it stopped jumping because the larvae were cocooned again. There is also a mystery here-the beans have not gone bad at all, so how did the bugs get into the beans? After long-term careful observation, it is found that insects usually lay eggs in the ovary of flowers at the peak of flowering. When the ovary of the flower grows and bears fruit in real time, the eggs will gradually hatch into larvae. In this case, the fruit (beans) actually has no holes, but the bugs live in the beans. /a/200906 17/453.shtml Source: Ciba Chinese

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