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MEDIUM
ENGLISH
Agriculture
The biological weathering occurs due to the action of:
A
Acids
Option A
B
Alkalies
Option B
C
Oxygen
Option C
D
Carbon dioxide
Option D
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MEDIUM
ENGLISH
Agriculture
A population of individuals of a species which are interfertile but differ genetically is called:
A
Ecad
Option A
B
Ecotone
Option B
C
Ecotype
Option C
D
Biome
Option D
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MEDIUM
ENGLISH
Agriculture
The optimum temperature for seedling growth in the upper gangetic plains is around:
A
10? – 15?C
Option A
B
5? – 10?C
Option B
C
20? – 25?C
Option C
D
30? – 40?C
Option D
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MEDIUM
ENGLISH
Agriculture
The ultraviolet radiations are able to peretreate in a sea as deep as:
A
40 meters
Option A
B
400 meters
Option B
C
200 meters
Option C
D
5 meters
Option D
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MEDIUM
ENGLISH
Agriculture
The equatic thermal strata where no temperature gradients are observed is called:
A
Epilimnion
Option A
B
Metalimnion
Option B
C
Hypolimnion
Option C
D
Thermocline
Option D
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MEDIUM
ENGLISH
Agriculture
Plants growing in rock crevices are called:
A
Sciophytes
Option A
B
Chasmophytes
Option B
C
Helophytes
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Agriculture
The albido value of a forest is around:
A
1-2%
Option A
B
3-5%
Option B
C
5-10%
Option C
D
20-30%
Option D
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MEDIUM
ENGLISH
Agriculture
Plants growing near the sea whore are generally resistant to:
A
Lodging
Option A
B
Erosion
Option B
C
Salt spray
Option C
D
Injuries
Option D
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MEDIUM
ENGLISH
Agriculture
Albido value refers to:
A
Turbidity of solar radiations
Option A
B
Percentage of solar absorption
Option B
C
Percentage of reflected light by a surface
Option C
D
Amount of light absorbed by forests
Option D
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MEDIUM
ENGLISH
Agriculture
The composition of soil air is affected by:
A
Pore size
Option A
B
Soil organisms
Option B
C
Type of roots
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
Flowering is induced if germinating seeds are exposed to:
A
Low temperature
Option A
B
High Temperature
Option B
C
Temperature below freezing
Option C
D
Temperature above 45 degree C
Option D
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MEDIUM
ENGLISH
Agriculture
The heliophytes possess:
A
Low K+ concentration and low O.P
Option A
B
High K+ concentration and low O.P
Option B
C
Low K+ concentration and high O.P
Option C
D
High K+ concentration and high O.P
Option D
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MEDIUM
ENGLISH
Agriculture
In western Himalayas, the Betula trees usually occur in:
A
Tropical zone
Option A
B
Sub-tropical zone
Option B
C
Alpine zone
Option C
D
Temperate zone
Option D
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MEDIUM
ENGLISH
Agriculture
When a plant of hot climate is transferred to colder regions, it gets an injury called:
A
Chilling
Option A
B
Thermal death
Option B
C
Desiccation
Option C
D
Freezing
Option D
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MEDIUM
ENGLISH
Agriculture
The heliophytes are characterised by:
A
High OP, high K+ conc
Option A
B
High OP, low K+ conc
Option B
C
Low OP, low K+ conc
Option C
D
Low OP, high K+ conc
Option D
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MEDIUM
ENGLISH
Agriculture
The alpine forests are classed under the plant group called:
A
Mesotherms
Option A
B
Megatherms
Option B
C
Microtherms
Option C
D
Hekistotherms
Option D
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MEDIUM
ENGLISH
Agriculture
The orange and red wave lengths of light are able to penetrates in a sea upto a depth of:
A
5 meters only
Option A
B
20 meters only
Option B
C
50 meters
Option C
D
80-100 meters
Option D
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MEDIUM
ENGLISH
Agriculture
The temperature based zone at an altitude of 10,000 is:
A
Tropical
Option A
B
Sub-tropical
Option B
C
Temperate
Option C
D
Alpine
Option D
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MEDIUM
ENGLISH
Agriculture
Mark the true xerophyte:
A
Capparis aphylla
Option A
B
Solanum xanthocarpum
Option B
C
Euphorbia milli
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
Magnolia and oaks occur in the following zone:
A
Tropical
Option A
B
Sub-tropical
Option B
C
Alpine
Option C
D
Temperate
Option D
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