GAS EXCHANGE AT STOMATA

• WHAT HAPPENS TO O2 AT THE STOMATA?

  diffuses out
• WHAT HAPPENS TO CO2 AT THE STOMATA?

  diffuses in
• WHAT ADAPTION DO STOMATA HAVE?

  close at night to reduce water loss by evaporation
• WHAT STATE ARE GUARD CELLS TO OPEN THE STOMATA?

  swollen
• WHAT STATE ARE GUARD CELLS IN TO CLOSE THE STOMATA?

  shrunken