Answer:
If a plant that normally self-pollinates receives a pollen grain from another plant, this is known as cross-pollination.
Cross-pollination can occur naturally through wind, insects, or other pollinators carrying pollen from one plant to another, or it can be done intentionally by humans for the purpose of breeding or hybridization.
In a self-pollinating plant, the flower has both male and female reproductive structures, so the plant can reproduce without the need for external pollination. However, if a pollen grain from another plant is received, it may fertilize the female reproductive structures of the self-pollinating plant, resulting in a hybrid offspring with genetic traits from both parent plants.
The extent to which the hybrid offspring differs from the parent plants will depend on the genetic makeup of each plant and the extent of genetic variation between them. In some cases, the hybrid offspring may have desirable traits that make it more adaptable to different environmental conditions or more resistant to pests and diseases