telloluis42683owwav5 telloluis42683owwav5
  • 26-09-2017
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openings that allow for gas exchange

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patricksheridaowwbix patricksheridaowwbix
  • 26-09-2017
The stoma opens and closes to allow gas exchange. The Guard cells are located around the stoma and regulate the opening and closing of the stoma.
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