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Self-pollination is when the pollen grains transfer from the stigma of the same or genetically similar flower while cross-pollination is defined as the deposition of pollen grains from a flower to the stigma of another flower.
Answer:
SELF- POLLINATION IS WHEN POLLEN FROM THE SAME PLANT ARRIVES AT THE STIGMA OF A FLOWER OR AT THE OVULE.WHILE CROSS-POLLINATION IS ,ALSO CALLED HETETOGAMY TYPE OF POLLINATION IN WHICH SPERM-LADEN POLLEN GRAINS ARE TRANSFERRED FROM THE CONES OR FLOWERS OF ONE PLANT TO EGG-BEARING CONES OR FLOWERS OF ANOTHER.