BBC Learning Zone Clips

CLIP 4431

Nitrogen-fixing leguminous plants

Nitrogen-fixing leguminous plants
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Key Info
  • Nitrogen-fixing leguminous plants
  • Duration: 01:02
  • Leguminous plants of the pea flower family are characterised by nodules on their roots. These contain bacteria that are able to fix nitrogen from the atmosphere into the soil and the plants themselves. The process of crop rotation involves switching between crops that take nitrogen compounds out of the soil and leguminous plants that put them back in.
  • Subject:

    Science

       Topic:

    Bio: Plants - Physiology

  • Keywords: population, fertilisers, nutrients, legumes, bacteria, nitrogen, soil, chemistry, bitesize
Ideas for use in class
  • This could be used to introduce the linkage of population growth to demand for food. It links to discussion of farming and soil improvement.
Background details
  • Clip language : English
  • Aspect ratio : 16x9

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