Yes - plant roots are a vegetative organ.
The organ that holds a plant in place would be the roots. The roots also collect nutrients and water for the plant.
a organ that has five parts
roots...
The roots.
The root system of a plant always includes the roots, which are the primary organ responsible for anchoring the plant in the soil and absorbing water and nutrients.
Roots - Emily West Yorks
It would be an organ, since they serve a purpose. In this case the roots extract water from the soil.
organ
The roots of a plant serve as a center for absorption of water and nutrients from the soil. Additionally, the roots act as a storage organ for excess nutrients and energy in the form of starch.
The root system itself is an organ system. Plants have two organ systems: the root system and the shoot system. The root system consists of the ground meristem, root cap, endodermis, epidermis, parenchyma, etc in the roots. The shoot system consists of the main stalk, branchings, leaves, etc.
Flower in sexual reproduction and leaves,stems,eyes,roots etc... in asexual reproduction.
Since the root is the main organ of a plant, once one of its tissues were damaged, it will not just function properly but the plant will die.