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MEDIUM
ENGLISH
Agriculture
Mark the free floating hydrophyte:
A
Sagittaria
Option A
B
Typha
Option B
C
Najas
Option C
D
Spirodela
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following is a mangrove plant?
A
Acanthus ilicifolius
Option A
B
Avicennia offcinalis
Option B
C
Ceriops roxburghiana
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
Plants growing on sand and gravel are called:
A
Eremophytes
Option A
B
Oxylophytes
Option B
C
Psilophytes
Option C
D
Psammophytes
Option D
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MEDIUM
ENGLISH
Agriculture
Euhalophytes grow where the concentration of NaCl ranges:
A
Between 0.1 – 0.5%
Option A
B
Between 0.01 – 0.1%
Option B
C
Above 1.0%
Option C
D
Between 0.5 – 1.0%
Option D
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MEDIUM
ENGLISH
Agriculture
When a plant first begins to wilts permanently in a pot, its 54.5 gms of soil has 4.5 gms of water. The PWP of this soil is:
A
4.50%
Option A
B
9%
Option B
C
8.25%
Option C
D
16.50%
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following feature is found in xerophytes?
A
Equally developed palisade and spongy parenchyma
Option A
B
Multistratose epidermis
Option B
C
Non-functional stomata
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Agriculture
The leaves are absent in the xerophyte:
A
Calotropis procera
Option A
B
Zizyphis jujuba
Option B
C
Acacia nilotica
Option C
D
Capparis aphylla
Option D
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MEDIUM
ENGLISH
Agriculture
In which of the following groups, all the plants belong to the same category?
A
Nymphaea, Poamogeton, Victoria
Option A
B
Utricularia, Typha, Aponogeton
Option B
C
Lemna, Spirodela, Azolla
Option C
D
Ranunculus, Vallisneria, Hydrilla
Option D
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MEDIUM
ENGLISH
Agriculture
Plant groups growing in zones where high temperature alternates with low temperature are called:
A
Megatherms
Option A
B
Hekistotherms
Option B
C
Microtherms
Option C
D
Mesotherms
Option D
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MEDIUM
ENGLISH
Agriculture
The mesophytes are characterised by:
A
Uniform mesophyll
Option A
B
Absence of cuticle
Option B
C
Well developed root-shoot systems
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
Mark the rooted submerged hydrophyte:
A
Potamogeton
Option A
B
Najas
Option B
C
Ranunculus
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Agriculture
The mangrove plants are generally characterised by:
A
Mircophylly
Option A
B
Pneumatophores and vivipary
Option B
C
Absence of aerenchyma
Option C
D
Poor water storage
Option D
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MEDIUM
ENGLISH
Agriculture
Plants growing on externally cold soil are called:
A
Halophyte
Option A
B
Oxylophyte
Option B
C
Psychrophyte
Option C
D
Psammophyte
Option D
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MEDIUM
ENGLISH
Agriculture
Plants growing on rocks are called on:
A
Psychrophytes
Option A
B
Lithophytes
Option B
C
Halophytes
Option C
D
Sciophytes
Option D
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MEDIUM
ENGLISH
Agriculture
Plants growing on desert and steppe are called:
A
Oxylophytes
Option A
B
Lithophytes
Option B
C
Eremophytes
Option C
D
Psilophytes
Option D
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MEDIUM
ENGLISH
Agriculture
Mark the helophyte:
A
Suaeda fruticosa
Option A
B
Cressa cretica
Option B
C
Salsola foetide
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
Plants growing in marsh are called:
A
Halophytes
Option A
B
Heliophytes
Option B
C
Halophytes
Option C
D
Sciophytes
Option D
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MEDIUM
ENGLISH
Agriculture
Halophytes growing on mud are called:
A
Pelophilous
Option A
B
Heliophilous
Option B
C
Psammophilous
Option C
D
Lithophilous
Option D
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MEDIUM
ENGLISH
Agriculture
The proto co-operation is also called:
A
Non-obligatory mutualism
Option A
B
Non-obligatory commensalism
Option B
C
Facultative predation
Option C
D
Facultative parasitism
Option D
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MEDIUM
ENGLISH
Agriculture
The relationship between the alga Cladophora and the snail shell on which it grows corresponds to:
A
Commensalism
Option A
B
Predation
Option B
C
Neutralism
Option C
D
Mutualism
Option D
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