関連ワード:  when guard cells swell    when guard cells swell stomatal pore closes    when guard cells swell as a result of water absorption    when do guard cells swell    when do guard cells swell to open the stomata    when do guard cells swell and what is its effect    what happens when guard cells swell    stomata open when guard cells swell due to    the guard cells swell when water flows in them    the guard cells swell when water flows into them