#root  the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground
  supertype:  plant_organ__plantorgan  a functional and structural unit of a plant or fungus
  subtype:  calamus  taro  ginseng  horseradish_root  radish.root  chicory  oyster_plant  Hottentot_bread  briarroot  orrisroot  sarsaparilla_root  licorice_root  senega  mandrake_root  cassava  carrot.root  parsnip.root  taproot  adventitious_root  rootlet  prop_root
  substance:  parenchyma.plant_tissue
  part of:  root_system
  part:  root_cap  thimble-shaped mass of cells covering and protecting the growing tip of a root
  part:  root_hair  thin hairlike outgrowth of an epidermal cell just behind the tip; absorbs nutrients from the soil
  part:  bark  tough protective covering of the woody stems and roots of trees and other woody plants

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