Question

why do plants need to disperse their seeds?

Answer 1

the plants need to scatter their seeds in order to ensure the survival of its species

Answer 2

Plants make seeds that can grow into new plants, but if the seeds just fall to the ground under the parent plant, they might not get enough sun, water or nutrients from the soil. Because plants cannot walk around and take their seeds to other places, they have developed other methods to disperse (move)their seeds.