External plant structures such as leaves, stems, roots, flowers, fruits, and seeds are known as plant organs.
Each organ is an organized group of tissues that works together to perform a specific function.
These structures can be divided into two groups: sexual reproductive and vegetative. Sexual reproductive parts produce seed; they include flower buds, flowers, fruit, and seeds.
Vegetative parts include roots, stems, shoot buds, and leaves; they are not directly involved in sexual reproduction. Vegetative parts often are used in asexual forms of reproduction such as cuttings, budding, or grafting.