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MEDIUM
ENGLISH
Agriculture
Succulents are likely be found in:
A
Tropical rain forests
Option A
B
Deciduous forests
Option B
C
Deserts
Option C
D
Tundras
Option D
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MEDIUM
ENGLISH
Agriculture
Mechanical tissues and xylem are highly reduced in Hydrilla because:
A
Water provides the support and there is no problem for the absorption and conduction of water
Option A
B
Otherwise the weight of these tissues would drown the plant
Option B
C
Of the anaerobic conditions created by submergence
Option C
D
Otherwise translocation of food would have been interrupted
Option D
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MEDIUM
ENGLISH
Agriculture
In Opuntia, the leaves are modified into:
A
Scales
Option A
B
Stolons
Option B
C
Spines
Option C
D
Phylloclades
Option D
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MEDIUM
ENGLISH
Agriculture
The storage capacity of a soil equals:
A
Field capacity
Option A
B
Field capacity less capillary water
Option B
C
Field capacity less hygroscopic water
Option C
D
Field capacity plus gravitational water
Option D
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MEDIUM
ENGLISH
Agriculture
In submerged hydrophytes, which of the following is present?
A
Air spaces
Option A
B
Cuticle
Option B
C
Well developed sclerenchyma
Option C
D
Well developed vascular tissues
Option D
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MEDIUM
ENGLISH
Agriculture
Among the plants listed, point out one that does not fit into biological group represented by other plants
A
Euphorbia
Option A
B
Acacia
Option B
C
Vallisneria
Option C
D
Aloe
Option D
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MEDIUM
ENGLISH
Agriculture
The plankton is:
A
Red algae
Option A
B
Floating fauna
Option B
C
Passively floating or drifting flora of micro-organisms
Option C
D
A layer of organic matter
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following is not the characteristic feature of the anatomy of xerophytes?
A
Spongy paraenchyma
Option A
B
Well developed conducting tissue
Option B
C
Well developed mechanical tissue
Option C
D
Thick cuticle
Option D
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MEDIUM
ENGLISH
Agriculture
Plants growing in extreme cold soil are:
A
Oxylophytes
Option A
B
Halophytes
Option B
C
Psychrophytes
Option C
D
Psammophytes
Option D
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MEDIUM
ENGLISH
Agriculture
Sunken stomata are found in the leaves of:
A
Nelumbium
Option A
B
Hydrilla
Option B
C
Mango
Option C
D
Nerium
Option D
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MEDIUM
ENGLISH
Agriculture
Thick cuticles on leaves are typical of plants growing in:
A
Wet habitats
Option A
B
Warm habitats
Option B
C
Dry habitats
Option C
D
Cool habitats
Option D
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MEDIUM
ENGLISH
Agriculture
The water held tightly in a thin film by te soil particles is known as:
A
Run away water
Option A
B
Hygroscopic water
Option B
C
Capillary water
Option C
D
Gravitational water
Option D
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MEDIUM
ENGLISH
Agriculture
Hydrilla is a:
A
Free floating hydrophyte
Option A
B
Submerged hydrophyte
Option B
C
Suspended hydrophyte
Option C
D
Floating and anchored hydrophyte
Option D
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MEDIUM
ENGLISH
Agriculture
The soils that are fully laden with water i.e., water logged, are known are:
A
Physically dry soils
Option A
B
Physiologically dry soils
Option B
C
Alkaline soils
Option C
D
Acidic soils
Option D
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MEDIUM
ENGLISH
Agriculture
The soil organisms are:
A
Harmful to the plants growing in the soil
Option A
B
Useful to plants growing in the soil
Option B
C
Neither harmful nor useful to plants growing in the soil
Option C
D
Both harmful as well as useful to plants growing on the soil
Option D
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MEDIUM
ENGLISH
Agriculture
Soil that is made-up of particles, that have been carried in water and thus deposited, is called:
A
Silt
Option A
B
Clay
Option B
C
Sub-soil
Option C
D
Loam
Option D
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MEDIUM
ENGLISH
Agriculture
In submerged hydrophytes, functional stomata are found:
A
On upper surface of the leaf
Option A
B
Lower surface of the leaf
Option B
C
Both the surfaces of the leaf
Option C
D
Nowhere on the plant
Option D
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MEDIUM
ENGLISH
Agriculture
Water logging occurs:
A
In sandy soil
Option A
B
On gravels
Option B
C
In loamy soil
Option C
D
In clay soil
Option D
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MEDIUM
ENGLISH
Agriculture
Plants that grow in a marshy saline habitat are called:
A
Hydrophytes
Option A
B
Xerophytes
Option B
C
Mesophytes
Option C
D
Mangroves
Option D
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MEDIUM
ENGLISH
Agriculture
Among the following characters which one does not characterise a hydrophyte?
A
Abundant air spaces and air chambers
Option A
B
Plentiful xylem and sclerenchyma
Option B
C
Leaves having stomata only on the upper side or none
Option C
D
Poor development of roots
Option D
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