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MEDIUM
ENGLISH
Agriculture
At which latitude, heat grain through insolation approximately equals heat loss through terrestrial radiation?
A
42 1/2? North and South
Option A
B
22 1/2? North and South
Option B
C
60? North and South
Option C
D
40? North and South
Option D
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MEDIUM
ENGLISH
Agriculture
Endemic plants are those which grow in:
A
Fresh water lakes
Option A
B
Shady places
Option B
C
Tissue of other plants
Option C
D
Geographically limited areas
Option D
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MEDIUM
ENGLISH
Agriculture
Relative to shoots, the roots can be very massive in plants of:
A
Deserts
Option A
B
Lakes and ponds
Option B
C
Mixed temperate forests
Option C
D
Mixed tropical forests
Option D
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MEDIUM
ENGLISH
Agriculture
Xerophytes are generally found in:
A
Deserts
Option A
B
Water
Option B
C
Hills
Option C
D
Water bank
Option D
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MEDIUM
ENGLISH
Agriculture
Plants die from prolonged water logging because:
A
Soil nutrients become very dilute
Option A
B
Root respiration stops
Option B
C
Nutrients leach down due to excessive water
Option C
D
Cell sap in plant becomes too dilute
Option D
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MEDIUM
ENGLISH
Agriculture
Reduction of mechanical and vascular tissue and poor roots are found in:
A
Hydrophytes
Option A
B
Xerophytes
Option B
C
Halophytes
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Agriculture
Which one has feebly developed root system and numerous air cavities?
A
Xerophytes
Option A
B
Halophytes
Option B
C
Hydrophytes
Option C
D
Mesophytes
Option D
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MEDIUM
ENGLISH
Agriculture
During adverse season, thermophytes survive by:
A
Bulbs
Option A
B
Corms
Option B
C
Rhizomes
Option C
D
Seeds
Option D
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MEDIUM
ENGLISH
Agriculture
In which region the juicy fruits are found?
A
Desert
Option A
B
Hills
Option B
C
Plains
Option C
D
Sea
Option D
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MEDIUM
ENGLISH
Agriculture
MAB stands for:
A
Man and biology programme
Option A
B
Man and biosphere programme
Option B
C
Mammals and biosphere programme
Option C
D
Mammals and biology programme
Option D
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MEDIUM
ENGLISH
Agriculture
Possibilities of presence of coal in a particular area can be guessed by the study of:
A
Economic Botany
Option A
B
Ecology
Option B
C
Pollen analysis
Option C
D
Mining the area
Option D
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MEDIUM
ENGLISH
Agriculture
Study of relationship between communities and environment is called:
A
Autecology
Option A
B
Ethology
Option B
C
Ecology
Option C
D
Syncology
Option D
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MEDIUM
ENGLISH
Agriculture
More than 70% of world’s freshwater is contained in:
A
Polar ice
Option A
B
Greenland
Option B
C
Antarctica
Option C
D
Glaciers and Mountains
Option D
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MEDIUM
ENGLISH
Agriculture
The ecologically fixed and genetically irreversed component of species is called:
A
Ecotone
Option A
B
Ecological equivalents
Option B
C
Ecotype
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Agriculture
Useful adaptation of hydrophytes is:
A
Large leaves
Option A
B
Decrease in mechanical tissue
Option B
C
Large mechanical tissue
Option C
D
Increase in aerenchyma
Option D
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MEDIUM
ENGLISH
Agriculture
Mark the hyperparasite:
A
Thesium
Option A
B
Tape worm
Option B
C
Bacteria
Option C
D
Balanophora
Option D
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MEDIUM
ENGLISH
Agriculture
The type of relationship where weaker partner is benefitted and stronger remains unaffected is sometime called:
A
Allotropy
Option A
B
Allelopathy
Option B
C
Synnecrosis
Option C
D
Allolimy
Option D
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MEDIUM
ENGLISH
Agriculture
Those chemicals which are produced by plants and affect other plants are broadly called:
A
Depresants
Option A
B
Allomones
Option B
C
Allelochemics
Option C
D
Kairomones
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following plants does not show predation?
A
Darlingtonia
Option A
B
Viscum
Option B
C
Both (a) & (b)
Option C
D
Cephalotus
Option D
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MEDIUM
ENGLISH
Agriculture
Those chemicals, which are released by one organism but they destroy the other organism are precisely called:
A
Allomones
Option A
B
Allelochemics
Option B
C
Kairomones
Option C
D
Depresants
Option D
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