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Plant photosynthesising underwater

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Credit

FRANCIS CHEE / SCIENCE PHOTO LIBRARY FRANCIS CHEE / SCIENCE PHOTO LIBRARY

Caption

Experiment showing an eelgrass plant (Vallisneria sp.) photosynthesising underwater. At the start the plant is in bright light, and bubbles of oxygen are seen coming from the leaves. This indicates that photosynthesis is occurring. At the end of the clip the light is switched off, and the bubbling stops. Photosynthesis is the biochemical process that plants use to produce sugars from atmospheric carbon dioxide, producing oxygen as a side-product. The process is driven as they harness energy from sunlight using the green pigment chlorophyll. All the oxygen in the atmosphere has been produced by photosynthesising plants.

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Downloadable Master

  • Duration: 00:01:03.24
  • Audio: No
  • Format: Photo JPEG 100% QuickTime movie

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  • Capture Format: HDV

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