Class #2

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Author:
jenfox
ID:
34854
Filename:
Class #2
Updated:
2010-09-28 00:58:46
Tags:
Tree Biology
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Description:
Tree Biology
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  1. Parthenocopic
    • Species that do NOT require fertilization to produce fruit
    • ex. fig, apple, peach, cherry, birch
  2. Respiration
    • Glucose + Oxygen > Energy + Carbon Dioxide + Water
    • The reverse of photosynthesis where the plant is using stored energy
    • *photosynthesis must exceed respiration
  3. Gymnosperms
    • Flowers are pollen and seed cones
    • Evergreen trees
  4. Imperfect Flower
    Does NOT have male and female reproductive parts in the same flower.
  5. Monoecious
    Male and female flowers are found on the same plant
  6. Dioecious
    Male and female flowers are on different plants
  7. Chlorophyll
    • Pigment found in plants that aid in photosynthesis.
    • Reflects the green spectrum of light.
  8. Tropism
    The orientation and direction a plant grows in response to external stimuli
  9. Apical Dominance
    Controlled by the hormone, Auxin. The main central stem is dominant over the side stems.
  10. Photosynthesis
    • Carbon Dioxide + Water in the presence of light > Oxygen + Photosynthate (sugars, carbohydrate)
    • *must exceed respiration
  11. Complete Flower
    • A flower with petals and sepals. Lower ring of sepals called the calyx are usually green.
    • Ex. Apples, cherries, nectarine
  12. Perfect Flower
    Contains both male (pollen bearing stamens) and femal (pistil) reproductive parts
  13. Fruit
    • A developed ovary.
    • Fleshy portion is a fertilized ovary
    • Seeds are ovules
  14. Excurrent
    • Strong apical dominance.
    • Central leader has growth priority.
    • Pyramidal shape
  15. Angiosperm
    • Has flowers
    • Deciduous trees
  16. Phototropism
    A plants drive to grow toward a light source
  17. Decurrent
    • Rounder trees
    • Apical buds are slowed and lateral buds keep pace
  18. Chloroplasts
    Organelles found in plant cells that conduct photosynthesis by capturing light energy to convert to photosynthate.
  19. Geotropism
    A plants drive to grow in an upward direction.
  20. Transpiration
    • The loss of water in the form of vapor from the leaves and lenticels.
    • When transpiration exceeds absorption, cells lose turgor and wilt.
  21. Auxin
    A hormore that controls growth in plants. Found in root and shoot tips and drives them to elongate.

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