1
問題一覧
1
A dynamic natural body on the earth’s surface composed of both Living and non-living materials where plants can grow
Soil
2
The study of soil from the standpoint of higher plants or plant
Edaphology
3
The size of this soil particle is less than 1 um
Soil colloids
4
Nitrification carried out by autotrophic bacteria is not affected by
Which of the following?
Redox potential
5
In relation to crop production, clayey soils are known to be
more fertile than sand
6
A soil consists of the three components, namely: solid, liquid and gas
all of the above
7
This macronutrient is not a component of any organic molecule in
The plant; its function is more catalytic in nature and usually
Deficient in coarse-textured soils.
Phosphorus
8
Component of amino adds such as methionine, cystein, and cystine
And is usually deficient in waterlogged soils.
Sulfur
9
The soil is called a because it comes from the weathering of naturally occurring rocks and minerals
Natural body
10
Needed in chlorophyll synthesis and usually deficient in alkaline
Soil
Iron
11
Needed in the synthesis of auxin and is usually deficient in
Waterlogged soils.
Zinc
12
Rocks formed by cooling and solidification of molten magma and
Lava in the crust
Igneous rocks
13
Individual soil layers or layers parallel to the ground surface.
Horizon
14
What is the moisture regime of the soil Tropaquepts which are
Inceptisols that are found in the tropics?
aquic
15
The non-crystalline organic colloidal fraction of the soil.
Humus
16
Soil microorganism that degrade carbon – containing pesticide are
Considered
Heterotrophs
17
The most abundant gas in the soil atmosphere is
N2
18
The physicist who formulated the law governing the rate of
Settling particles in viscous medium
Stoke
19
Under its natural occurrence a soil is aggregated and porous
All of the above
20
Rocks that are formed when magma id not reach the earth’s
Surface but solidifies in the cavities or cracks that the magma had
Made by pushing the surrounding rock apart or by melting or
Dissolving it.
Intrusive rocks
21
Loose earth materials above solid rock
Regolith
22
Haplauents are young soils with minimal development. In what
Order does the soil belong?
Entisols
23
Soil Classification System
23. The Philippine adopts the
United States Department of Agriculture (USDA)
24
A soil horizon is defined as
A soil layer that differs in recognized properties from other layers below
25
Soil texture that would be best for growing lowland rice
clay
26
A sedimentary rock which is a recemented clay
shale
27
A soil order characterized as shrinking and swelling dark clay soils
Vertisols
28
It is an amorphous or less crystalline clay developed from volcanic
Ash
Allophane
29
The biochemical oxidation of ammonium to nitrate, predominantly
By autotrophic bacteria.
Nitrification
30
An example of physical weathering process is
Exfoliation
31
Generally, coarse-textured soils are characterized as soils with
all of the above
32
These are naturally occurring inorganic substances with fairly
Definite chemical composition and specfic physical properties
Minerals
33
A soil order characterized as embryonic soil with few diagnostic
Features
Inceptisol
34
In strongly acid soils, the availability of most micronutrient cations
Is
Increased
35
Generally, fine-textured soils are characterized to have
high ability to supply plant nutrients
36
The relative distribution of sand, silt, and clay is called soil
Texture
37
Minerals that are crystallized from the cooling of magma
Primary minerals
38
Andepts are soils that were derived from volcanic activity and
Were origin ally classified as Inceptisols. What is the new order of
These soils?
Andisols
39
The study of rock
Petrology
40
Which of these soils has the most rapid percolation rate?
Sandy soils
41
Soil texture refers to the coarseness or fineness of a soil
Sand is gritty
42
The primary source of calcium in the soil
Calcite
43
An example of a 2:1 expanding type of silicate mineral
Montmorillonite
44
Most of the N in the solid fraction of the soil is in the form of
Organic N
45
The molten mass where igneous rocks solidify from is:
Magma
46
The decomposition of the complex substances of rocks and
Minerals resulting to changes in chemical composition, release of
Soluble materials and formation of new minerals.
Ion exchange
47
It refers to the amount of exchangeable cations per unit weight of
Dry soil.
Cation exchange capacity
48
Nitrate is not removed from the soil system by which of the
Following?
Nitrogen fertilization
49
Metamorphosis is caused by
High pressure and temperature
50
It refers to the arrangement of primary soil particles into
Secondary units or aggregates
Soil structure
51
This regime has mean annual soil temperature of 15t or higher
But lower than 22 t.
Thermic
52
The weathering that takes place below the soil solum
Geochemical weathering
53
A subsoil with high clay accumulation is written in symbol as
Bt
54
The source of permanent negative charge of clays.
Isomorphous substitution
55
The source of positive charge of silicate clays.
protonation
56
Microaerophillic microorganisms require
minimal oxygen level
57
The weathered parent material corresponds to this horizon
C
58
These are natural soil aggregates
peds
59
A mean annual temperature of 8t or higher but lower than 15t
Defines this soil temperature regime
mesic
60
This compound reacts with carbonic acid forming a more soluble
Bicarbonate. Its reaction contributes to the weathering process.
carbonation
61
This horizon is plowed and rich in humus. It will be designated as
Horizon.
Ap
62
A 25 gram soil saturated with 5 me Ca* has a cation exchangeCapacity equal to
20 me Ca/100 g soil
63
The principal form of nitrogen utilized during rapid plant growth
Period is
NO3-
64
The true soil correspon ds to horizon
A,B
65
Characteristic soil structure of sandy soils
single - grained
66
In relation to crop production cdayey soils are known to be
all of the choices
67
The mean annual soil temperature is 22 tor higher
hyperthermic
68
A russian pedologist who published the first soil forming factor equation
jennykov
69
Compute the % base saturation of a soil with a CEC of 100
Me/100g and whose exchange sites are occupied by 20 me/100 g
Of basiC cations.
20%
70
The relationship of percent base saturation and soil pH
%BS decreases as soil pH decreases
71
Particle density is a stable soil property and most agricultural soils
Would have partice densities close to this value
2.66 g/cm
72
The fitness of a given type of land for specified kind of land use.
land suitability
73
The most influential factor in soil formation
climate
74
Are chemical elements taken up by plants in large quantities
macronutrients
75
Which of the following process is not mediated by soil microorganism?
p immobilization
76
Soil texture could be determined by
all of the choices
77
The minimum size of delineation is 0.2 hectare to 4 hectare the order of soil survey is
1st
78
In the soil profile parent material of soil is usually located in
lowest part
79
The general form of nutrients taken up by plant is
ions
80
Iron oxide mineral that contribute red color to many soils
hematite
81
The mineral supplying p is
apatite
82
Soil grown to corn is best cultivated when the soil consistency is
friable
83
Soil texture could be determined in the laboratory by
hydrometer method
84
The minimum size of delineation is 16 ha to 259 ha. The order of Soil survey is
3rd
85
Soil formation slows down because of constant mixing within the
Profile, nullifying the colloid movement downward by
burrowing animals
86
The lowest category of the US Soil Taxonomy is
series
87
The form of nitrogen taken up by plants from the soil
NH
88
What do you expect when you increase OM of the soil?
decrease the amount of N to apply
89
Calculate the gravimetric moisture content of the soil sample if its
Fresh weight (FW) is 25 g and its oven dry weight (ODW) is 20 g.
25%
90
The upper diameter size limit of clay particles is
0.002 mm
91
Represent areas that should be permanently retained as forest
Environment
preservation areas
92
Movement of material out of a portion of a soil profile as in an albic horizon
eluviation
93
This will retard soil profile development because it exposes new materials
steep slopes
94
Water deposited sediments are called
alluvial deposits
95
The major form of nitrogen in the soil is
organic
96
An element which is an important component of plant cell wall
calcium
97
Non-symbiotic N, fixing organisms in lowland soil.
bacteria
98
The resistance of a mineral to abrasion is
hardness
99
The softest mineral is
talc
100
Available water capacity is calculated as
Field capacity minus permanent wilting point
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1
A dynamic natural body on the earth’s surface composed of both Living and non-living materials where plants can grow
Soil
2
The study of soil from the standpoint of higher plants or plant
Edaphology
3
The size of this soil particle is less than 1 um
Soil colloids
4
Nitrification carried out by autotrophic bacteria is not affected by
Which of the following?
Redox potential
5
In relation to crop production, clayey soils are known to be
more fertile than sand
6
A soil consists of the three components, namely: solid, liquid and gas
all of the above
7
This macronutrient is not a component of any organic molecule in
The plant; its function is more catalytic in nature and usually
Deficient in coarse-textured soils.
Phosphorus
8
Component of amino adds such as methionine, cystein, and cystine
And is usually deficient in waterlogged soils.
Sulfur
9
The soil is called a because it comes from the weathering of naturally occurring rocks and minerals
Natural body
10
Needed in chlorophyll synthesis and usually deficient in alkaline
Soil
Iron
11
Needed in the synthesis of auxin and is usually deficient in
Waterlogged soils.
Zinc
12
Rocks formed by cooling and solidification of molten magma and
Lava in the crust
Igneous rocks
13
Individual soil layers or layers parallel to the ground surface.
Horizon
14
What is the moisture regime of the soil Tropaquepts which are
Inceptisols that are found in the tropics?
aquic
15
The non-crystalline organic colloidal fraction of the soil.
Humus
16
Soil microorganism that degrade carbon – containing pesticide are
Considered
Heterotrophs
17
The most abundant gas in the soil atmosphere is
N2
18
The physicist who formulated the law governing the rate of
Settling particles in viscous medium
Stoke
19
Under its natural occurrence a soil is aggregated and porous
All of the above
20
Rocks that are formed when magma id not reach the earth’s
Surface but solidifies in the cavities or cracks that the magma had
Made by pushing the surrounding rock apart or by melting or
Dissolving it.
Intrusive rocks
21
Loose earth materials above solid rock
Regolith
22
Haplauents are young soils with minimal development. In what
Order does the soil belong?
Entisols
23
Soil Classification System
23. The Philippine adopts the
United States Department of Agriculture (USDA)
24
A soil horizon is defined as
A soil layer that differs in recognized properties from other layers below
25
Soil texture that would be best for growing lowland rice
clay
26
A sedimentary rock which is a recemented clay
shale
27
A soil order characterized as shrinking and swelling dark clay soils
Vertisols
28
It is an amorphous or less crystalline clay developed from volcanic
Ash
Allophane
29
The biochemical oxidation of ammonium to nitrate, predominantly
By autotrophic bacteria.
Nitrification
30
An example of physical weathering process is
Exfoliation
31
Generally, coarse-textured soils are characterized as soils with
all of the above
32
These are naturally occurring inorganic substances with fairly
Definite chemical composition and specfic physical properties
Minerals
33
A soil order characterized as embryonic soil with few diagnostic
Features
Inceptisol
34
In strongly acid soils, the availability of most micronutrient cations
Is
Increased
35
Generally, fine-textured soils are characterized to have
high ability to supply plant nutrients
36
The relative distribution of sand, silt, and clay is called soil
Texture
37
Minerals that are crystallized from the cooling of magma
Primary minerals
38
Andepts are soils that were derived from volcanic activity and
Were origin ally classified as Inceptisols. What is the new order of
These soils?
Andisols
39
The study of rock
Petrology
40
Which of these soils has the most rapid percolation rate?
Sandy soils
41
Soil texture refers to the coarseness or fineness of a soil
Sand is gritty
42
The primary source of calcium in the soil
Calcite
43
An example of a 2:1 expanding type of silicate mineral
Montmorillonite
44
Most of the N in the solid fraction of the soil is in the form of
Organic N
45
The molten mass where igneous rocks solidify from is:
Magma
46
The decomposition of the complex substances of rocks and
Minerals resulting to changes in chemical composition, release of
Soluble materials and formation of new minerals.
Ion exchange
47
It refers to the amount of exchangeable cations per unit weight of
Dry soil.
Cation exchange capacity
48
Nitrate is not removed from the soil system by which of the
Following?
Nitrogen fertilization
49
Metamorphosis is caused by
High pressure and temperature
50
It refers to the arrangement of primary soil particles into
Secondary units or aggregates
Soil structure
51
This regime has mean annual soil temperature of 15t or higher
But lower than 22 t.
Thermic
52
The weathering that takes place below the soil solum
Geochemical weathering
53
A subsoil with high clay accumulation is written in symbol as
Bt
54
The source of permanent negative charge of clays.
Isomorphous substitution
55
The source of positive charge of silicate clays.
protonation
56
Microaerophillic microorganisms require
minimal oxygen level
57
The weathered parent material corresponds to this horizon
C
58
These are natural soil aggregates
peds
59
A mean annual temperature of 8t or higher but lower than 15t
Defines this soil temperature regime
mesic
60
This compound reacts with carbonic acid forming a more soluble
Bicarbonate. Its reaction contributes to the weathering process.
carbonation
61
This horizon is plowed and rich in humus. It will be designated as
Horizon.
Ap
62
A 25 gram soil saturated with 5 me Ca* has a cation exchangeCapacity equal to
20 me Ca/100 g soil
63
The principal form of nitrogen utilized during rapid plant growth
Period is
NO3-
64
The true soil correspon ds to horizon
A,B
65
Characteristic soil structure of sandy soils
single - grained
66
In relation to crop production cdayey soils are known to be
all of the choices
67
The mean annual soil temperature is 22 tor higher
hyperthermic
68
A russian pedologist who published the first soil forming factor equation
jennykov
69
Compute the % base saturation of a soil with a CEC of 100
Me/100g and whose exchange sites are occupied by 20 me/100 g
Of basiC cations.
20%
70
The relationship of percent base saturation and soil pH
%BS decreases as soil pH decreases
71
Particle density is a stable soil property and most agricultural soils
Would have partice densities close to this value
2.66 g/cm
72
The fitness of a given type of land for specified kind of land use.
land suitability
73
The most influential factor in soil formation
climate
74
Are chemical elements taken up by plants in large quantities
macronutrients
75
Which of the following process is not mediated by soil microorganism?
p immobilization
76
Soil texture could be determined by
all of the choices
77
The minimum size of delineation is 0.2 hectare to 4 hectare the order of soil survey is
1st
78
In the soil profile parent material of soil is usually located in
lowest part
79
The general form of nutrients taken up by plant is
ions
80
Iron oxide mineral that contribute red color to many soils
hematite
81
The mineral supplying p is
apatite
82
Soil grown to corn is best cultivated when the soil consistency is
friable
83
Soil texture could be determined in the laboratory by
hydrometer method
84
The minimum size of delineation is 16 ha to 259 ha. The order of Soil survey is
3rd
85
Soil formation slows down because of constant mixing within the
Profile, nullifying the colloid movement downward by
burrowing animals
86
The lowest category of the US Soil Taxonomy is
series
87
The form of nitrogen taken up by plants from the soil
NH
88
What do you expect when you increase OM of the soil?
decrease the amount of N to apply
89
Calculate the gravimetric moisture content of the soil sample if its
Fresh weight (FW) is 25 g and its oven dry weight (ODW) is 20 g.
25%
90
The upper diameter size limit of clay particles is
0.002 mm
91
Represent areas that should be permanently retained as forest
Environment
preservation areas
92
Movement of material out of a portion of a soil profile as in an albic horizon
eluviation
93
This will retard soil profile development because it exposes new materials
steep slopes
94
Water deposited sediments are called
alluvial deposits
95
The major form of nitrogen in the soil is
organic
96
An element which is an important component of plant cell wall
calcium
97
Non-symbiotic N, fixing organisms in lowland soil.
bacteria
98
The resistance of a mineral to abrasion is
hardness
99
The softest mineral is
talc
100
Available water capacity is calculated as
Field capacity minus permanent wilting point