Bananas are curved because of the sun
Yes, you heard it right. This happens due to the process called negative geotropism. negative geotropism is nothing but as its name suggests negative means opposite and geotropism means the gravity that simply means opposite to gravity. The process in which the plant parts grow opposite to the gravity is known as negative geotropism. Banana’s pulls themselves to the rays of sunlight that is coming from the big leaves of banana and at the same time gravity attracts banana down. In this process, not even the banana grows straight nor gravity completely attracts the banana towards itself, but in this process banana gets its smily curved shape.