help in attracting the insects for pollination
Lilacs have four petals but there are double lilacs with eight petals.
Petals fall because of new petals growing. It gives the new petals space to grow.
42 petals
There is no standard collective noun for petals, in which case a noun suitable for the situation can be used, for example, a cluster of petals, a sprinkling of petals, a rain of petals, etc.
Okay there are no flowers just petals but here are the one's I know, rose petals, daisy petals, buttercup petals, and lily petals. But those are just the one's I remember.
21 petals
Lilies have 3 petals and 3 sepals, which look like petals. So, lilies appear to have 6 petals. See related links
100 petals
no petals do not kill you, unless they have a diease
Petals
No, Poppy Petals are dangerous.
NO petals can be fatal to hamsters