The current understanding is that a flower is a modified shoot with each whorl being modified leaves. In this understanding, the stamens are modified leaves that have sporangia (anthers) on them. The sporangia (anthers) produce haploid spores via meiosis and the spores develop into pollen grains. Thus, the stamen becomes the microsporophyll that produces the microsporangia that produce the microspores that grow into the microgametophyte (pollen) that produce the microgametes (sperm).
Hence, the correct answer is option b.
View full answer