Which of the following bacterium causes crown gall disease in plants?
A. Bacillus thurigiensis
B. Agrobacterium tumefaciens
C. Pseudomonas fluorescens
D. None of the above
Answer: Option B
A. Bacillus thurigiensis
B. Agrobacterium tumefaciens
C. Pseudomonas fluorescens
D. None of the above
Answer: Option B
The anti-malarial drug quinine is made from a plant. The plant is
A. Neem
B. Eucalyptus
C. Cinnamon
D. Cinchona
The causal organism of black stem rust of wheat is
A. Xanthomonas compestris
B. Pseudomonas solanacearum
C. Puccinia graminis tritici
D. Albugo candida
A. a-2, b-1, c-4, d-3
B. a-1, b-4, c-3, d-2
C. a-4, b-3, c-2, d-1
D. a-3, b-2, c-1, d-4
Which one of the following plants is used for green manuring in India?
A. Wheat
B. Sunhemp
C. Cotton
D. Rice
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