What is the structure that holds the male gametes of a plant?

The structure that holds the male gametes of a plant is the pollen grain. Pollen grains are microgametophytes that form within the anthers of flowering plants and are responsible for the reproduction process. Each pollen grain contains the male gametes, which are essential for fertilization in plants. When pollen is transferred to the stigma of a flower, it can germinate and grow a pollen tube, allowing the sperm cells to travel towards the ovule for the fertilization of the egg cell.

In contrast, ovules are structures that contain the female gametes and develop into seeds after fertilization. Spores are reproductive units in non-flowering plants and fungi, whereas seeds are the result of fertilized ovules and contain the embryo of the plant. Understanding these specific reproductive parts aids in grasping the broader concepts of plant reproduction and lifecycle.