System Interactions.

1. roots

   Nota:

   • send water up to the plant through the xylem tubes
2. stems
   1. xylem

      Nota:

      • brings water up from the roots
   2. phloem

      Nota:

      • brings nutrients down from leaves
3. leaves

   Nota:

   • have stomata to let air and water in and out of the plant send nutrients to the plant through the phloem tubes
   1. needles

      Nota:

      • needles do not dry out as fast , so some plants keep their needles during the winter or during the dry seasons
      • don't have as many stomata as the leaves

Nota:

• response to stimuli
• maintain stability and balance

1. tropisms
   1. phototropism
   2. thigmotropism
   3. gravitropism

Nota:

• maintains balance

1. tissues
   1. organ
      1. organ system
         1. digestive
            1. appendix
            2. Ingestion
               1. mouth
                  1. pharynx
                  2. tongue
                  3. teeth
                  4. salivary glands
               2. substrate
               3. fluid
               4. bulk
               5. suspension
            3. digestion
               1. stomach
                  1. ruminants
                     1. 4 chambers
               2. pancreas
               3. liver
               4. small intestine
               5. gallbladder
            4. absorption
            5. elimination
               1. large intestine
               2. anus
         2. immune
         3. excretory
         4. circulatory
         5. endocrine
         6. nervous
            1. acquired
            2. innate
               1. phagocytes
         7. skeletal
         8. muscular
            1. viscera or smooth
               1. intestines
            2. skeletal
               1. attached to bones
            3. cardiac
               1. heart
         9. reproductive