#100.
The parent material corresponds to this horizon.
A
AB
B
ABCD
C
D
D
C
Answer: C
#101.
A diagnostic horizon formed directly under the plow lay.
A
Agric
B
Spodic
C
Cambic
D
Native
Answer: Agric
#102.
Soils in this category have the same color, texture, consistency, thickness and reaction and have the
same number and arrangement of horizons and similar chemical and mineralogical properties.
A
Family
B
Great group
C
Soil order
D
Soil series
Answer: Soil series
#103.
A category whose differentiating characteristics are properties important for plant growth.
A
Great group
B
Sub-group
C
Family
D
Order
Answer: Family
#104.
The highest category in the soil taxonomy
A
Family
B
Great group
C
Order
D
Series
Answer: Order
#105.
The smallest volume that can be called soil
A
Aggregate
B
Horizon
C
Pedon
D
Profile
Answer: Pedon
#106.
This vitamin is important for blood clotting because it is used as a co-factor in the synthesis of
prothrombin by the liver.