N never mind New member Apr 24, 2009 #2 A) Guard cells closed to avoid trabspiration and therefore loss of water as wind contributes to a higher transpiration rate. B) Guard cells open, as high humidity results in a slower transpiration rate.
A) Guard cells closed to avoid trabspiration and therefore loss of water as wind contributes to a higher transpiration rate. B) Guard cells open, as high humidity results in a slower transpiration rate.
