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Question-1
Cultivation of trees in a dwraf plant is known as
(A)
Bonsai
(B)
Ikebona
(C)
Apomixis
(D)
Arboriculture
Question-2
Which of the following pair is incorrect?
(A)
Organochlorine &DDT
(B)
Carbamate &carbaryl
(C)
Pyrethroid& atrazine
(D)
Organophosphate & malathion
Question-3
Which of the following is found in rice field?
(A)
Azolla
(B)
Rhizobium
(C)
Anthocers
(D)
Rhodospirillum
Question-4
Which kind of soil is suitable for cultivation of rice crop?
(A)
Red
(B)
Black
(C)
Loam
(D)
Gravel
Question-5
2,4-D is an effective
(A)
Fungicide
(B)
Weedicide
(C)
Rodenticicde
(D)
Wormicide
Question-6
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-7
Pesticides kill,
(A)
Only plant pest
(B)
Harmful insects
(C)
Only specific insects
(D)
Both harmful and useful insects
Question-8
Azolla is used as bio fertilizer because it has
(A)
Rhizobium
(B)
Mycorrtiza
(C)
Cyanobacteria
(D)
None of these
Question-9
Jaya and padma are varieties of
(A)
Rice
(B)
Wheat
(C)
Cotton
(D)
Chilly
Question-10
The technique of obtaining large number of plantlets by tissue culture is called
(A)
Organ culture
(B)
Plantlet culture
(C)
Micro propagation
(D)
Macro propagation
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Plus 2 Biology Science
ICSE/ISC
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