What does pollen contain?

Pollen contains male sex cells, which are essential for the reproductive process in flowering plants. Specifically, pollen grains carry the male gametes (sperm cells) that are necessary for fertilization. When pollen is transferred to the stigma of a compatible flower during pollination, it can germinate and grow a pollen tube, allowing the sperm cells to reach the ovule in the ovary. This process is crucial for the production of seeds and the continuation of the species. The understanding of pollen's role in plant reproduction highlights its importance in the life cycle of flowering plants and the production of fruits and seeds.