Order Biogeography Essay Assignment Help

Order Biogeography Essay Assignment Help
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1. Which of the following is/are the active
processes in formation and
development of soil?
(a) Relief (b) Time
(c) Parent material (d) Climate
2. In the first stage of soil formation, the
parent rock material is weathered into
(a) Lopolith (b) Batholith
(c) Regolith (d) None of these
3. High temperature leads to which of the
following effects on soil formation?
(a) Reduces microbial activity
(b) Increases leaching
(c) Increases microbial activity
(d) None of the above
4. Forests play an important role in
formation of soil in which of the
following ways?
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(a) Increases humidity
(b) Reduces evaporation
(c) Improves precipitation
(d) All of the above
5. Which of the following factors is
considered as a ‘passive soil former’?
(a) Climate (b) Time
(c) Biota (d) Parent material
6. Which of the following is concerned
with soil? [UPPSC 2018]
(a) Edaphic (b) Climate
(c) Biotic (d) Topography
7. Biodiversity forms the basis for human
existence in which of the following ways?
(a) Soil formation [APSC 2017]
(b) Prevention of soil erosion
(c) Recycling of waste
(d) Pollination of crops
8. Which one of the following processes
occurs in the humid tropics where
heavy rain and uninterrupted warmth
give rise to deeply weathered layer?
(a) Leaching (b) Podzolisation
(c) Laterisation (d) Salinisation
9. In which of the following processes
silica is removed rather than iron or
aluminium, which accumulates at the
surface?
(a) Leaching (b) Podzolisation
(c) Laterisation (d) Salinisation
10. In which one of the following soil
forming processes, organic acids of
soluble chelates are formed?
(a) Leaching (b) Podzolisation
(c) Laterisation (d) Salinisation
11. When soil materials are removed from
the elluvial horizon and deposited in
the lower layers, it is known as
(a) Laterisation (b) Illuviation
(c) Leaching (d) Eluviation
12. In wet regions, soil water often washes
clay particles down through root
channels and worm tunnels. The clay
particles are then deposited in the
sub-soil. This process is called
(a) eluviation (b) cheluviation
(c) lessivation (d) leaching
13. Consider the following statements and
choose the correct one.
I. Calcification involves precipitation
and accumulation of calcium
carbonate.
II. Podzolisation leaches calcium
carbonate from soil.
III. Accumulation of magnesium is
termed as alkalisation.
Codes
(a) Both I and II (b) All of these
(c) Both II and III (d) Both I and III
14. Consider the following statements and
choose the correct option.
I. A cold and humid climate is most
favourable for podzolisation.
II. The process of laterisation removes
silica from soil.
III. Warm and tropical climate is most
favourable for laterisation.
Codes
(a) Both I and II (b) Both II and III
(c) Both I and III (d) All of these
15. Consider the following statements.
I. The pedogenic processes are
extremely complex and dynamic.
II. Various processes operate under
varying natural environment to form soil.
III. Leaching does not affect soil formation.
Choose the correct option.
(a) Both I and II (b) Both II and III
(c) Both I and III (d) All of these
16. Statement I Mechanical transfer of
minerals from soil horizon e.g. by rain,
downwards is called eluviation.
Statement II Chemical transfer of
minerals from soil horizon is called
leaching.
Codes
(a) Both the statements are individually
true and statement II is the correct
explanation of statement I
(b) Both the statements are individually
true, but statement II is not the correct
explanation of statement I
(c) Statement I is true, but statement II is
false
(d) Statement I is false, but statement II is
true
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17. Statement I Horizonation is the process
of differentiation of soil in its depth.
Statement II Differentiation of soil is due
to eluviation, illuviation, humification etc.
Codes
(a) Both the statements are individually
true and statement II is the correct
explanation of statement I
(b) Both the statements are individually
true, but statement II is not the correct
explanation of statement I
(c) Statement I is true, but statement II is
false
(d) Statement I is false, but statement II is
true
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