For better and healthier propagation of plants, the seeds and fruits must be dispersed in such a way that they do not fall directly underneath the mother plant because they soon exhaust the soil of its essential food constituents and compete for space, light, and water.
To guard against their contingencies, seeds and fruits have developed many special devices for their widespread dispersal. It, thus ensures that the risk of a species of the plant becoming extinct is reduced to the minimum.
Following are some ways by which dispersal of seeds and fruits takes place.
1.DISPERSAL OF SEEDS AND FRUITS BY WIND:
Tiny and lighter seeds and fruits which are produced in abundance are generally dispersed through the wind. Due to their lightweight, the wind carries them to distant places as in grass. Seeds and fruits of some plants are _ winged or hairy which help thein to be blown by air from place to place. Cotton, sumbal, and caltrops (Akk) are examples of seeds which are dispersed by wind.
2. DISPERSAL OF SEEDS & FRUITS BY WATER:
The seeds and fruits of the plants that grow in or along the banks of water bodies are adapted to float and are easily dispersed by water. They contain spongy tissue which renders them lighter and allows them to float to distant Places e.g. lotus, coconut etc.