- Seeds of a plant get dispersed to different places and form different plants at different places.
- Seeds are dispersed by water, wind and animals.
- Wind blow off the winged seeds of drumsticks, light seeds of grasses, hairy seeds of oak and hairy fruit of sunflower.
Fig. Seed dispersal
- Coconut seeds are dispersed by water as the seeds develop the capacity to float in the presence of sponge like or fibrous outer coat.
Fig. Coconut with fibrous outer coat
- Xanthium seeds are spiny with hooks and get attached to the bodies of animals and thus dispersed by animals.
Fig. Spiny xanthium seeds with hooks
- Castor and balsam seeds disperse far when the fruit disperse burst with sudden jerks.
Fig. Castor seeds
Advantages of seed dispersal
- Seed dispersal prevents competition between the plant and it is own seedling for sunlight, water and nutrients.
- Plants can acquire new habitat by seed dispersal and distribute widely.