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Question

The gibberellins are plant growth hormones. They cause elongation of stem. Gibberellin was first isolated by Japanese workers from .........

A
Endosperm of barley
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B
Sporophyte of moss
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C
A parasitic fungus
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D
Scutellum of rice
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Solution

The correct option is C A parasitic fungus
Japanese workers first isolated the fungal pathogen causing foolish seedling disease in rice seedlings from an ascomycota fungi called as Gibberella fujikori. It is a plant pathogen. It acts by producing GA as the side product of metabolism and thus overloading the same.
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