what are the steps of pollination?
['Step 1: A grain of pollen falls onto stigma.', 'Step 2: Insect enters flowers and brushes against anther and then is coated in pollen.', 'Step 3: Some pollen can fall onto stigma as insect leaves flower.', 'Step 4: pollen falls onto the stigma of the next flower.', 'Step 5: a small seed forms in the ovary in the plant.']