What consists of male and female gametes in flowering plants?

In flowering plants, the male and female gametes are specifically represented by pollen grains and ovules. Pollen grains are produced by the male reproductive organs, known as the anthers, and carry the male gametes (sperm cells). On the other hand, ovules are found within the female reproductive structures, called the ovaries, and contain the female gametes (egg cells).

This distinction is essential for the process of fertilization, where a sperm cell from a pollen grain can fuse with an egg cell in an ovule, leading to the formation of a zygote, which eventually develops into a seed. Other options describe parts of the plant but do not serve the purpose of gamete production. For example, roots and stems are mainly involved in support and nutrient transport, while leaves are primarily for photosynthesis. Seeds and fruits result from fertilization and subsequent development but do not directly consist of the gametes themselves.