Gravitropism

{
  "id": "MLC-T-ENV-012519",
  "term": "Gravitropism",
  "field": "Environment",
  "definition": "The directional growth of organisms in response to gravity. In plants, the main root is positively gravitropic (growing downwards) and a main stem is negatively gravitropic (growing upwards), irrespective of the positions in which they are placed. Plant gravitropism is thought to be controlled by auxin (auxins), a plant growth substance. (From Concise Dictionary of Biology, 1990.)",
  "references": [
    "NLM Medical Subject Headings (MeSH)"
  ],
  "url": "https://mlchart.com/terminology/environment/gravitropism/"
}