Leaves

Gas Exchange
Diagram LEAF BLADE CO₂ enters, O₂ exits via stomata STOMATA Tiny pores for gas exchange CHLOROPLASTS Site of photosynthesis STEM Transports water and nutrients LENTICELS Gas exchange in the stem FRUIT Stores energy from respiration ROOT SYSTEM Absorbs water and minerals ROOT HAIR CELLS Increase surface area for uptake ROOT JUNCTION Water enters plant here TRACHEA Windpipe — carries air in/out CARTILAGE RINGS Keep the airway open LARYNX Voice box — top of windpipe BRONCHI Two branches into each lung BRONCHIOLES Smaller branches inside lungs RIGHT BRANCH Leads to right lung lobes LEFT LUNG Two lobes; slightly smaller RIGHT LUNG Three lobes; slightly larger ALVEOLI Gas exchange with blood here