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Question-1
The latest trend in plant disease control is
(A)
Chemical control
(B)
Biological control
(C)
Use of fertilizers
(D)
Use of disease resistance varieties
Question-2
The process of micro propagation is the formation of the new plants from
(A)
Tissue
(B)
Plant parts
(C)
Vegetative cells
(D)
Either 1 or 2
Question-3
Which of the following pesticides is an aceylcholinesterase inhibitor?
(A)
Aldrin
(B)
Y-BHC
(C)
Endosulfan
(D)
Malathion
Question-4
Pesticides kill,
(A)
Only plant pest
(B)
Harmful insects
(C)
Only specific insects
(D)
Both harmful and useful insects
Question-5
Selection of homozygous plant is
(A)
Mass selection
(B)
Mass selection
(C)
Pure line selection
(D)
None of these
Question-6
The bio fertilizers are
(A)
Anabaena and azolla
(B)
Fertilizers produced by biotechnology
(C)
Cow dung, manure and faryard waste
(D)
Quick growing crop ploughed under soil
Question-7
Creosote is used to prevent
(A)
Rusts of wheat
(B)
Dry rot of wood
(C)
Loose smut of oats
(D)
Brown rust of barley
Question-8
The origin of bread wheat is due to the cross between
(A)
T. turgidum
and
T.dicoccum
(B)
T. monococcum
and L
vena fatua
(C)
T. dicoccum
and
Aegilops speltoides
(D)
T. turgidum
and
Aegilops squaroosa
Question-9
Emasculation is concerned with
(A)
Hybridization
(B)
Colonal selection
(C)
Mass selection
(D)
Pure line selection
Question-10
The plants face wilting due to the use of excessive fertilizers, because of
(A)
Exosmosis
(B)
Endosmosis
(C)
Imbibition
(D)
All of these
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Plus 2 Biology Science
ICSE/ISC
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