What is the difference between self-pollination and cross pollination ?

The difference between self-pollination and cross pollination are:

Self-pollination

  • Pollination of the stigma by the pollen grains of the same flower.
  • It does not provide opportunity for genetic variability.
  • Examples: pea, wheat, rice.

Cross pollination

  • Pollination of the stigma by the pollen grains of another flower of a different plant.
  • It provides opportunity for genetic recombination and greater variability.
  • Examples: maize, Mulberry.