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Gibberellin was first extracted from...

Gibberellin was first extracted from

A

Gibberella fujikuroi

B

Gelidium

C

Gracilaria

D

Aspergillus

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The correct Answer is:
A
In japan (in early 1800's), certain rice plants suffered from bakanae (foolish seedling) disease. Such rice plants were thin, pale green, spindle shaped, longer by `50%` than the healthy plants, and were sterile. The disease was found by Hori and Kurosawa to be caused by a fungus, Gibberella fujikuroi. The fungus is the perfect stage of Fusarium moniliforme.
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NCERT FINGERTIPS-PLANT GROWTH AND DEVELOPMENT-Plant Growth And Development
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  2. Avena curvature test is a bioassay for examining the activity of

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  3. Gibberellin was first extracted from

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  9. Select the correct statements (s) regarding auxins.

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  10. Apical dominance is dicot plants is due to the presence of morein the ...

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  11. The term 'auxin precursor' refers to

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  12. Read the given statements and select the correct option. (i) Darwin ...

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  13. In the process of apical dominance, lateral buds are unable to grow in...

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  14. Decapitation i.e. removal of shoot tips in a plant usually results in

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  17. The hormone responsible for apical dominance is

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  18. Functions of auxins include

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