Key Stage 3 (KS3) Plants Practice Test

After fertilization occurs, the ovule undergoes a significant transformation and develops into a seed. This process is a crucial part of the plant's reproductive cycle. When a sperm cell from the pollen fertilizes the ovule, it forms a zygote, which then begins to divide and grow within the protective ovule structure.

As the ovule develops into a seed, it contains the genetic material from both parent plants and will eventually give rise to a new plant. The seed also contains nutrient stores to support the developing embryo until it can establish its own ability to photosynthesize and grow. This transformation allows the plant species to propagate and ensures the continuation of its genetic lineage.

The other options do not accurately represent the role of the ovule after fertilization. For instance, producing a flower occurs much earlier in the reproductive process, while drying out or becoming a leaf does not align with the ovule's purpose within the plant's lifecycle. Thus, the correct answer reflects the essential progression from fertilization to seed development.