A piece of a plant may root or sprout and grow into a new plant which is genetically identical with the parent. Sexual reproduction results in a new plant which contains genetic material from both parents, but which is not genetically identical with either one. Many plants are able to reproduce asexually. Some plants send up shoots from their roots and form big clumps of stalks and leaves. Some can grow leaves from pieces of root that have been torn up.
Some plants grow from bulbs which can grow small new bulbs at the root level.
Some plants can grow from cut off leaves or stems. Many of our house plants are shared this way. Some plants even grow little plants on their leaves or root when a piece of stem is buried. All these methods of reproduction work well. However, they do not make it possible for plants to move to new locations.