; Plant Parts and their Functions
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Plant Parts and their Functions

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									       Objective 13.02
• What are the biological terms (and
  their definitions) used to describe
  plants?
    Life Cycles of Plants
• Annual-a plant that completes its
  life cycle in one year
• Biennial-a plant that completes its
  life cycle in two years
• Perennial-a plant that lives more
  than two years
        Leaf Retention
• Deciduous-loses leaves during the
  dormant season
• Evergreen-keeps leaves and
  remains green year-round
        Plant Hormones
• Several types of hormones are
  used to help plants work more
  efficiently.
  – Inhibitors
  – cytokinins
  – gibberellias
  – auxins
           Inhibitors
• Inhibitors hasten fruit ripening,
  retain seed germination and stem
  elongation.
          Cytokinins
• Hormones that work with auxins to
  stimulate cell division.
          Gibberellias
• Hormones that stimulate cell
  elongation, premature flowering,
  and breaking of dormancy.
             Auxins
• Hormones that speed plant growth
  by stimulating cell enlargement
      Moisture in Plants
• Turgid-plant is swollen or filled
  with moisture
• Wilted-plant is limp because it
  does not have enough moisture
• What are the biological terms (and
  their definitions) used to describe
  plants?

								
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