Concept:Pollination is the transfer of pollen grains from the anther to the stigma.Explanation:I shows pollen moving from the anther to the stigma of the same flower, so it is self-pollination.II shows pollen moving between flowers on the same plant, P, so it is also self-pollination.III shows pollen moving from a flower on plant P to a flower on plant Q, so it is cross-pollination.Thus, the types of pollination are self, self, and cross.Answer:B. self, self and cross
