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MEDIUM
ENGLISH
Agriculture
The processes involved in the chemical weathering are:
A
Carbonation and oxidation
Option A
B
Hydrolysis and chelation
Option B
C
Hydrolysis and reduction
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
The term ‘hexicology’ was proposed by:
A
Elton
Option A
B
Mivart
Option B
C
Reiter
Option C
D
Misra
Option D
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MEDIUM
ENGLISH
Agriculture
A part of the rock forming material of the earth comprises:
A
Oxides of Ca and Na
Option A
B
Oxides of Ca and K
Option B
C
Aluminosilicates of Na, K and Ca
Option C
D
Nitrates of Fe and Al
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following horizons has the maximum amount of organic matter?
A
Horizons A2 and B
Option A
B
Horizon B only
Option B
C
Horizon A1
Option C
D
Horizons B and C
Option D
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MEDIUM
ENGLISH
Agriculture
The rock cover of the earth is called:
A
Lithosphere
Option A
B
Xerosphere
Option B
C
Pasmmosphere
Option C
D
Pedosphere
Option D
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MEDIUM
ENGLISH
Agriculture
Solum’ includes:
A
Horizons A1 and A2 only
Option A
B
Horizon A only
Option B
C
Horizons A2 and B only
Option C
D
Horizons A and B
Option D
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MEDIUM
ENGLISH
Agriculture
The science of ecology has been defined as the study of the structure and function of nature by:
A
Odum
Option A
B
Misra
Option B
C
Warming
Option C
D
Maeckel
Option D
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MEDIUM
ENGLISH
Agriculture
A passive factor which affects formation of soil:
A
Nature of parent material
Option A
B
Annual rainfall
Option B
C
Wind velocity
Option C
D
Mean temperature
Option D
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MEDIUM
ENGLISH
Agriculture
The transition zone between two different types of communities is called:
A
Biome
Option A
B
Ecotone
Option B
C
Biological spectrum
Option C
D
Biological clock
Option D
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MEDIUM
ENGLISH
Agriculture
Mark the draught evader:
A
Kangaroo rat
Option A
B
Camel
Option B
C
Desert rat
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
The biological weathering commonly brought about by:
A
Algae
Option A
B
Bacteria
Option B
C
Fungi
Option C
D
Lichens
Option D
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MEDIUM
ENGLISH
Agriculture
A population of individuals from the same genetic stock but differing in their morphology is called:
A
Ecotype
Option A
B
Ecad
Option B
C
Ecotone
Option C
D
Life form
Option D
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MEDIUM
ENGLISH
Agriculture
The soil formation occurs in the following consecutive stages:
A
Weathering : sedimentation
Option A
B
Weathering : pedogenesis
Option B
C
Pedogenesis : weathering
Option C
D
Sedimentation : pedogenesis
Option D
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MEDIUM
ENGLISH
Agriculture
The term ‘ethology’ was coined by:
A
Reiter
Option A
B
Haeckel
Option B
C
Warming
Option C
D
Hilaire
Option D
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MEDIUM
ENGLISH
Agriculture
Phytotron is the device through which:
A
Electrons are bombarded
Option A
B
Plants are grown in controlled environment
Option B
C
Mutations are produced plants
Option C
D
True breeding plants are produced
Option D
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MEDIUM
ENGLISH
Agriculture
When one organism is benefited without affecting the other, it is called:
A
Parasitism
Option A
B
Commensalism
Option B
C
Saprophytism
Option C
D
Symbiosis
Option D
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MEDIUM
ENGLISH
Agriculture
The first plants to reappear in a badly burnt forest area will most probably be:
A
Mosses
Option A
B
Liverworts
Option B
C
Ferns
Option C
D
Grasses
Option D
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MEDIUM
ENGLISH
Agriculture
Symbiosis means:
A
Harmful relationship of two organisms
Option A
B
A process advantageous to algae
Option B
C
Living together
Option C
D
Phenomenon useful to fungi
Option D
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MEDIUM
ENGLISH
Agriculture
Which adaptation is seen in the leaf insect?
A
Migration
Option A
B
Camouflaging
Option B
C
Batesion mimicry
Option C
D
Mullerian mimicry
Option D
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MEDIUM
ENGLISH
Agriculture
The migration of locuats corresponds to:
A
Periodic migration
Option A
B
Long distance migration
Option B
C
Short distance migration
Option C
D
None of these
Option D
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