What whorls are most likely to be missing in a wind pollinated glower?

Flower part would most likely be missing or highly reduced in wind-pollinated plants is petals

3 characteristics of wind, bat, bird pollinated flowers: wind: no petals, makes a lot of pollen, no scent, out in open bat: white, open at night, strong scent, large, strong easy access bird: red, tubular, no smell, nectar.