Choose the correct statements from the following.
I) Both wind and water pollinated flowers are very colourful and produce nectar.
II) Wind-pollinated flowers have large feathery stigma to easily trap air-borne pollen grains.
III) Flies are the dominant biotic pollinating agents.
IV) Pollination by water is quite rare in flowering plants and is limited to about 30 genera, mostly monocotyledons.