Bananas belong to berries and grow in clusters like grapes. A banana can be clustered into 16 clusters, and the clusters are long beside the roots. During the growth process, every banana plant contains auxin. With more sunshine, there will be more auxin, while with less sunshine, there will be less auxin, resulting in uneven distribution of auxin. This is also the phototaxis of plants. Everyone should stretch upward toward the light, so that the banana will bend slowly. So it's an arc! ! ! ! !