Self incompatibility arises due to

Solution (By Examveda Team)

Self-incompatibility arises due to Pollen does not germinate on the ovule.
It is a widespread mechanism in flowering plants that prevents inbreeding and promotes outcrossing.
The self-incompatibility response is genetically controlled by one or more multi-allelic loci and relies on a series of complex cellular interactions between the self-incompatible pollen and pistil.