The correct option is B Anther
Meiosis occurs in Anther. In plants, meiosis occurs in the anthers to form pollen grains that is the male gamete, and within the ovary to form ovules. In meiosis a diploid cell divides in such a way so as to produce four haploid cells. These haploid cells form gametes. Stem tips and root tips are meristematic tissue that undergoes rapid mitotic divisions.