Pollinated flowers swell into fruits that protect seeds and help carry them away from the parent.

The longer version

Once fertilisation happens, the flower parts that surrounded the ovules begin to change. Hormones from the developing seeds signal the surrounding tissue to swell, and the ovary wall thickens into the flesh or shell that people recognise as fruit.

The structure serves the seed rather than the parent. It protects the seeds while they mature, then helps move them away, whether by attracting animals that eat and carry them, by catching the wind, or by drying and splitting open. Seeds dropped at the base would compete with it. Fleshy, dry, winged, and buoyant kinds all solve that same problem in different ways.

Where this entry sits

Plants and Trees gathers ordinary and surprising details about how green things live, from the tallest forest giants down to the moss on a garden wall. Expect notes on flowers, seeds, roots, leaves, fungi, and the quiet tricks plants use to spread and survive. The full list sits on the Plants and Trees page, where every entry is listed in order.