#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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