Intro to Flowering Plant Form and Fxn

  1. Meristems
    • Seedlings and mature plants produce new tissue in areas
    • Is a region of undifferentiated cells that produce new tissues by cell division
    • Mature plants have shoot and root apical meristems
    • Dormant meristem occurs at shoot and root tips of seed embryos
  2. Plant body is composed of 3 types of organs:
    • Stem-produce leaves, branches and bear the reproductive structures
    • Leaves-flattened structures often specialized for photosynthesis
    • Roots-provide anchorage in the soil and foster efficient uptake of water & minerals
  3. Shoot system
    Multiple stems and leaves of plant
  4. Root system
    Aggregate of plant's roots
  5. Reproductive Development
    • Plants produce flowers, seeds, and fruits
    • Flower and floral buds are reproductive shoots that develop when shoot apical meristems produce flower parts instead of new stem tissues and leaves
    • Flower tissues enclose and protect tiny male and female gametophytes
  6. Plant growth and development-Four essential processes
    Cell division, growth, cell specialization, and apoptosis
  7. Primary meristems
    • Plant embryos grow into seedlings by adding new cells from two growth points:
    • Shoot Apical Meristem (SAM)
    • Root Apical Meristem (RAM)
  8. SAM and RAM both produce:
    • Protoderm-generates dermal tissue
    • Procambium-produces vascular tissues
    • Ground meristem-produces ground tissues defined by location
  9. Xylem
    Conducts water and minerals
  10. Phloem
    Carries sugar products of photosynthesis
  11. Eudicots Root
    taproot system with a main root that produces branch roots
  12. Monocots Root
    Fibrous root system with multiple roots
  13. Leaf Form:
    • Simple-only one blade, advantageous in shade by providing maximal light absorption
    • Complex or compd leaves- dissected into leaflets, common in hot environments for heat dissipation
  14. Eudicots Leaf
    have pinnate or palmate venation
  15. Monocots Leaf
    Have parallel venation
Card Set
Intro to Flowering Plant Form and Fxn
Intro to Flowering Plant Form and Fxn