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Question-1
Cultivating crops belonging to pea family, compensates the deficiency of
(A)
nitrogen
(B)
phosphorous
(C)
sulfur
(D)
None of these
Question-2
Rizobium is
(A)
a free living bacteria
(B)
found in root nodules of legumes
(C)
fixes phosphorous
(D)
None of these
Question-3
Good quality seeds could be produced by
(A)
Grafting
(B)
Inter cropping
(C)
Hybridization
(D)
None of these
Question-4
Which bacteria helps in nitrogen fixation?
(A)
Lactobacillus
(B)
Gram positive bacteria
(C)
E-coli
(D)
Rhizobium
Question-5
Plants get nitrogen from
(A)
atmosphere
(B)
Lactobacillus
(C)
Nitrate salts dissolved in water
(D)
None of these
Question-6
Azetobacter is
(A)
a free living bacteria
(B)
found in root nodules of legumes
(C)
fixes phosphorous
(D)
None of these
Question-7
Which of the following is not true?
(A)
Nitrogen is an essential element for the growth of plants.
(B)
Plants absorb nitrogen directly from atmosphere.
(C)
Azetobacter is seen in soil.
(D)
None of these
Question-8
_____ is not a vegetative propagation technique.
(A)
Grafting
(B)
Layering
(C)
Hybridization
(D)
None of these
Question-9
Which of the following helps in nitrogen fixation?
(A)
Azetobacter
(B)
Lactobacillus
(C)
E-coli
(D)
None of these
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Std 7
Kerala (English Medium)
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