From Wikipedia:

The function of the central dark florets of D. carota has been subject to debate since Charles Darwin speculated that they are a vestigial trait.[14] It has been suggested that they have the adaptive function of mimicking insects, thus either discouraging herbivory,[15] or attracting pollinators[16] by indicating the presence of food or opportunities for mating

Alright - so it’s not only me who thinks that they look like spiky insects 😄