Which term refers to a group of plants whose crowns or roots can easily be divided or moved?

The term that refers to a group of plants whose crowns or roots can easily be divided or moved is "clump." In horticulture, a clump typically describes a group of plants that grow together in a tight formation, sharing roots or overlapping crowns. This growth pattern makes it convenient to dig up and transplant the entire group, as their interconnected systems can be managed as a single unit.

Clumps are particularly common in perennial plants or certain shrubs that form dense root systems, making propagation and relocation easier as compared to solitary plants. When clumps are divided, it can also promote healthier growth in the remaining sections and the newly transplanted parts.

Other terms such as codominant, clone, and caliper do not describe this specific characteristic. Codominant refers to trees with two or more leaders of equal size. A clone refers to a genetically identical group of plants produced from a single parent, often through vegetative means. Caliper is a measurement used to determine the trunk diameter of a tree, which is unrelated to the growing habits or movement of plant groups.