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NOUN TMA Questions and Answers: BIO408- Soil Ecology Contd

1 0 144 - NOUN TMA Questions and Answers: BIO408- Soil Ecology Contd

div class=”separator” style=”clear: both; text-align: center;”>1 0 144 - 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,

center>


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

center>

—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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