You look out over a field of sunflowers. a farmer has grown the sunflowers to harvest and sell the seeds. some of the sunflowers are tall; some short. some of the flowers are bright yellow; others more multicolored. some heads are full of seeds; some are not full. how were these sunflowers most likely produced? a) sexually using seeds b) asexually using seeds c) asexually using cuttings of the stem d) sexually using tissue culture in the lab