Plant hormones control many processes besides bending. Auxins control growth. In a shoot they make cells elongate, which makes the shoot longer. Gibberellins and ethene have other jobs, and each hormone often has more than one effect.
Many seeds are dormant, which means they do not grow until conditions are right. Gibberellins break dormancy in seeds, so they start to germinate. They stimulate the seed to produce enzymes that break down its stored starch into sugars. The sugars give the embryo the energy and materials it needs to grow. Gibberellins also stimulate stem growth, and they help control when flowers develop and open.
Ethene is a gas. It controls the ripening of fruit, making fruit softer, sweeter and a different colour. Because ethene is a gas, it spreads through the air, so one ripe banana can make nearby fruit ripen faster. Ethene also helps to control the shedding of leaves, which is why many trees drop their leaves in autumn.