Questão 1
Questão
Most of the nutrients essential for growth are supplied to plants directly from the ___
Responda
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Cosmic Radiation
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Atmosphere
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Humus
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Rain Water
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Soil Solution
Questão 2
Questão
Which of the following is (are) essential plant nutrients?
Responda
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Sr
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Al
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Cu
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Pb
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All of the above
Questão 3
Questão
The lithosphere is made up of ___
Responda
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Air
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Rock
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Plants and animals
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Water
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All of the above
Questão 4
Questão
The layers of contrasting material found when on digs a hole in the ground are called ___
Responda
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Pedons
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Pseudoliths
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Horizons
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Soil structure
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Regoliths
Questão 5
Questão
A soil profile consists of (choose the best answer)
Responda
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The sum of chemical and physical data known about a soil
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The way a soil "feels"
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The set of layers in a vertical cross-section of the soil
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The general outline of a soil or groups of soil when viewed from the side
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The spatial boundaries of a particular soil
Questão 6
Questão
"Subsoil" is generally equivalent to which soil horizon?
Questão 7
Questão
In a typical mineral soil in optimal condition for plant growth, approximately what percentage of the pore space would be filled with water and what percentage filled with air?
Responda
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10% water; 90% air
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90% water; 10% air
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50% water; 50% air
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25% water; 75% air
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25% water; 25% air
Questão 8
Questão
The amount of different sizes of mineral particles in a soil defines soil ___
Responda
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Pore space
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Profile
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Texture
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Solution
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Personality
Questão 9
Questão
The water in the soil typically differs from pure water because soil water ___
Responda
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Contains mineral nutrients
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Is restrained in its flow by attraction to particle surfaces
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Contains organic compounds
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All of the above
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None of the above
Questão 10
Questão
Except for some kinds of food, modern industry has made human dependence on soils a thing of the past.
Questão 11
Questão
Most of the water in our rivers and lakes has come in contact with and been affected by soil.
Questão 12
Questão
Plants can be grown without any soil.
Questão 13
Questão
The mineral particles in soil consist of sand, silt, and clay.
Questão 14
Questão
Most, if not all, of the nutrient supply stored in a fertile soil is in forms readily available to plants.