An ovule is a small structure found in the reproductive organs of seed plants, specifically within the ovary of a flower. It contains the female gamete, or egg cell, and is crucial for the process of fertilization. When fertilized by pollen, the ovule develops into a seed, which can grow into a new plant. In addition to flowering plants, ovules are also present in gymnosperms, such as pine trees. Each ovule is surrounded by protective layers and can vary in shape and size depending on the species. The successful development of an ovule into a seed is essential for plant reproduction and the continuation of plant species.