NOUN TMA Questions and Answers: BIO408- Soil Ecology Contd
Q21 The soil test values are indices of
nutrient
Q22 The standard depth of sampling for a plowed soil is the depth of the plowed
Layer
Q23 Soil analysis involves _____ phases
3
Q24 ______ weathering is encouraged by the presence of water
mechanic al
Q25 _______ sometimes enter cracks in rocks and pry them apart, resulting in some disintegration.
Plant roots
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Q26 _______ changes set up differential stresses that eventually cause the rock to crack.
temperature
Q27 ___ a biochemical process that involves both destruction and synthesis
Weather ing
Q28 ___ are commonly classified as igneous, sedimentary and metamorphic
Rocks
center>
Q29 Oxisols are found on about _% of the world􀳦??s land,
8
Q30 _____ are formed by the accumulation of calcium-rich organic matter
Mollisols
Q31 _____ develop from limestone,
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Vertisols
Q32 Histosols cover only about _% of the world􀳦??s land areas in cold
1
Q33 In ______ the beginning or inception of profile development is evident
inceptiso ls
Q34 The following are soil orders except
Entisols
Gelisols
Aridisol s
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---None of t he option
Q35 Globally, entisols occupy about __% of the total ice free land area
16
Q36 The soil moisture level is sufficiently high to support plant growth for no longer than __ consecutive days .
90
Q37 ____ are usually formed on volcanic ash deposited in recent geological times
Andisol s
Q38 _____ are formed in cool to hot humid areas
Alfisols
Q39 The nomenclature system is ______ and conveys a great deal of information about the nature of soils.
Logical
Q40 There are ___ categories of classification in soil taxonomy
6
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