If there was no seed dispersion, the seeds would sprout directly close to the parent plant. For sunshine and water, the seed and the plant will compete. As a result, the plants get less sunlight and water than they should. The plant will die as a result of this. This is called "autosensitization."
Dispersal is very important for the survival of the species because it gives different plants a chance to grow away from their parents. If all the seeds from one plant germinated together, they wouldn't be able to support themselves because they'd need more nutrients and moisture than what can be obtained from just one root system. Also, some seeds need to be spread away from their parent in order for them to have a better chance of growing into healthy adults. Without dispersal, all the seeds from one plant would be genetically identical, which would cause that plant to become extinct when its time came because it couldn't survive due to lack of diversity within its population.
Some animals help out with dispersal by moving the seeds from one place to another. Animals such as birds, monkeys, and rabbits eat the pods or fruit containing the seed and then disperse them through their feces. Other animals disperse seeds by pushing them or rolling them under their feet like a squirrel does with its nuts. In fact, biodiversity is necessary for a species to remain alive today.
The dispersal of seeds is critical for the survival of plant species. Plants that grow too close together must compete for light, water, and nutrients from the soil. Plants may spread out across a large region thanks to seed dispersal, which helps them to avoid competing for the same resources. Animals play an important role in moving seeds far away from their parent plants. They do this by eating fruits or pods, then passing the seeds out of their bodies through defecation or urine, or by caching them for later ingestion.
Seeds are tiny, lightweight, and often brittle. They're easy to scatter by wind or water, so each plant needs to reach many locations to have any chance of survival. Without dispersal, seeds would accumulate around their parent plants, reducing the number of individuals in future generations. Scientists use the term "semelparity" to describe this type of reproduction where descendants resemble their parents (or grandparents) rather than different species. Semelparous plants die after producing only one generation per year while iteroparous plants can produce multiple generations per year with new individuals bearing different traits including some that may be completely unique creations produced by mutations.
Dispersal also increases the distance between relatives, which aids genetic diversity within populations. Closely related individuals are more likely to be born with similar traits, which can make them more vulnerable to extinction due to disease or climate change.
Seed dispersion is the movement of seeds away from their parent plant. The most common mechanism for seed dispersal is wind, but animals also disperse seeds by moving them on their bodies or in their feces. Humans have also dispersed seeds by using vehicles and tools.
When plants reproduce by means of spores or seeds, this process is called spore dispersal or seed dispersal, respectively. Spores are usually released into the air and carried by winds or water to new locations where they will land and germinate, forming more plants. Seeds are usually spread by animals who consume the fruit or flower of the parent plant and then scatter the seeds over a large area when they defecate or deliberately scatter the seeds after eating.
Spores are produced in special structures within the plant called spores capsules. These contain three parts: an outer coat that protects the spore against damage and moisture; a middle layer called the pericarp that gives the capsule shape; and an inner membrane called the phelsium that releases the spore when it breaks under slight pressure. Most spores are small (1-5 millimeters long) and colorless, but some large fungi produce brownish-black spores used as food for birds.