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Question
Which one of the following bacteria causes crown gall disease?
Which one of the following bacteria causes crown gall disease?
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Solution
The correct option is D Agrobacterium tumefaciens
Agrobacterium tumefaciens is a Gram-negative bacterium. It is the causative agent of crown gall disease. It has a Ti-plasmid which have the tumour causing genes. This gene causes the formation of the tumor when the plant is infected with the bacterium. The bacterium enters the plant when there is some wound or injury caused to the plant. Thus, the correct answer is option B.
Agrobacterium tumefaciens is a Gram-negative bacterium. It is the causative agent of crown gall disease. It has a Ti-plasmid which have the tumour causing genes. This gene causes the formation of the tumor when the plant is infected with the bacterium. The bacterium enters the plant when there is some wound or injury caused to the plant.
Thus, the correct answer is option B.
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