BIOLOGY -CH14

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Author:
purplebird1
ID:
9809
Filename:
BIOLOGY -CH14
Updated:
2010-03-09 21:24:43
Tags:
q
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Description:
Soil and Nitrogen
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  1. What is type A soil called?
    a)Weathering rock
    b)Subsoil
    c)Top soil
    d)Bedrock soil
    C. Top soil
  2. What 3 components are found in soil horizons?
    • Sand
    • Clay
    • Loam
  3. What are the pros and cons of sand?
    • Plenty of airspace
    • Low in water absorption
  4. What are the pros and cons of clay?
    • Low airspace
    • Binds minerals well
  5. What are the pros and cons for loam?
    Contains adequate amount of sand, clay and silt. Best for growing plants.
  6. Name 3 elements found most common in soil.
    • 1) Nitrogen 5%
    • 2) Phosphorus 15%
    • 3) Potassium 5%

    (Ammonium Sulfate)
  7. What happens to the soil when plant growth increases?
    A)stays the same
    B)depletes nutrients
    C)increase in mineral levels
    D)the soil can no longer be used
    B) depletes nutrients

    Plants absorb all of the soil's nutrients, therefore the soil in that region will have slower plant growth.
    (this multiple choice question has been scrambled)
  8. Inorganic fertilizers in agriculture can:
    a)provide nutrients in readily form(ions); can be controlled and fed to different crops
    b)provide nutrients sometimes.
    c)not be controlled
    d)none of the above
    • a)provide nutrients in readily forms(ions); can be controlled and fed to different crops
    • Think of it as feeding inorganic chemicals to plants.
  9. Organic fertilizers such as manure and compost are better for soil composition. The downside is
    a)Organic fertilizers lack O2 and other important chemicals to help plant growth.
    b)Minerals are not immediately dispersed in organic fertilizer.
    c)Too much ammonium sulfate present.
    d)None of the above
    • b)Minerals are not immediately dispersed in organic fertilizers.
    • Because there is less leeching

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