Environmental Influences in Plants

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Author:
Anonymous
ID:
146991
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Environmental Influences in Plants
Updated:
2012-04-11 05:16:25
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Environmental Influences Plants Biology
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Description:
Higher Biology - Unit Three - Environmental Influences in Plants
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  1. What are the three major elements needed by plants?
    • Carbon (C)
    • Hydrogen (H)
    • Oxygen (O)
  2. What are the four macro-elements required by plants?
    • Nitrogen (N)
    • Phosphorus (P)
    • Potassium (K)
    • Magnesium (Mg)
  3. What is the importance of nitrogen to a plant?
    It is required for synthesis of amino acids, proteins and nucleic acids
  4. What are the symptoms of nitrogen deficiency in plants?
    • Reduced growth
    • Leaves chlorotic (yellow)
    • Leaf bases red
    • Roots long and thin
  5. What is the importance of phosphorus to a plant?
    It is required for synthesis of ATP and nucleic acids eg DNA
  6. What are the symptoms of phosphorus deficiency in plants?
    • Reduced growth
    • Leaf bases red
  7. What is the importance of potassium to a plant?
    It is important in the transport of substances across cell membranes
  8. What are the symptoms of potassium deficiency in plants?
    • Growth reduced
    • Early death of older leaves
  9. What is the importance of magnesium to a plant?
    Required for synthesis of chlorophyll
  10. What are the symptoms of magnesium deficiency in plants?
    • Growth reduced
    • Leaves chlorotic (yellow)
  11. What kind of experiment is used to investigate the importance of a macro-element?
    Water culture experiments

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