Question

between self pollination and cross pollination

Answer 1

When pollen grains from the anther of a flower are transferred to the stigma of the same flower or another flower of the same plant is called self pollination
If the pollen grains from one plant get transferred to the stigma of another flower in another plant of the same species it is called cross pollination.

Answer 2

Cross PollinationSelf PollinationDefinitionCross pollination is the transfer of pollen grains from the anther of a flower to the stigma of a flower of a different plant of the same species.Self pollination is the transfer of pollen grains from the anther to the stigma of the same flowerSeen inInsects: Apples, grapes, plums, pears, raspberries, blackberries, strawberries, runner beans, pumpkins, daffodils, tulips, lavender Wind: grasses, catkins, dandelions, maple trees, and goat’s beard.Some legumes, e.g. peanuts. Orchids, peas and sunflowers, wheat, barley, oats, rice, tomatoes, potatoes, apricots and peaches.