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Question

The disease 'witch's broom' of leguminosae family is caused by a

A
Virus
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B
Mycoplasma
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C
Protozoan
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D
Fungus
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Solution

The correct option is D Fungus
Deformity caused to the woody plant is called witch's broom. Here, the natural structure of the plant is changed. Witch's broom disease may be caused by many different types of organisms, including fungi, oomycetes, insects, mistletoe, dwarf mistletoes, mites, nematodes, phytoplasmas. The deformity actually looks like a broom growths or bird's nest and may last for many years, typically for the life of the host plant.
So, the correct answer is option D.

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