How do phytohormones help the development of parthenocarpic fruits?
Parthenocarpic fruits are those produced without fecundation. Some plants naturally make parthenocarpic fruits, like the banana tree, stimulated by their own hormones. Angiosperms that do not naturally produce parthenocarpic fruits may do it if auxins are applied to flowers before fecundation. Therefore even without fecundation the ovaries grow and fruits are formed although seedless.