exhange in plants

• label the dicotyledonous leaf

  A) stomata

  B) spongy mesophyll

  C) palisade mesophyll

  D) waxy cuticle

  
• gas exchange

  • oxygen diffuses out
  • carbon dioxide diffuses in
  • to reduce water loss, the stomata closes at night
• xerophytes are plants that have adapted to survive in environments with limited water
• adaptations of xerophytes

  • curled leaf : traps moisture and increases local humidity
  • hairs - trap moisture and increases local humdity
  • thicker waxy cuticle : to reduce evaporation
  • longer root network : to reach more water