life procces

• Auxin diffuses downwards through the stem, causing cells to elongate more on one side than the other.
• This causes the stem to bend towards the light source.
• The plant hormone auxin is produced by the shoot apical meristem (SAM) at the tip of the stem.
• the events that occur in photosynthesis are

  • absorption of light energy by chlorophyll
• splitting of water molecules into oxygen and hydrogen ions
• release of electrons from water molecule
• transfer of electrons to NADP+
• releasing of carbon dioxide from air
• how do you prove there is chlorophyll in plants? add iodine and blue litmus paper
• what are the types of tropisms? gravitropism, phototropism, and geotropism
• gravitropism - response to gravity
• phototropism - response to light
• geotropism - response to earth's magnetic field
• what does auxin do in plant growth? it promotes cell elongation on one side of the stem or root
• where is auxin produced in plants? shoot tips