Gibberellins, ethylene and abscissic acid — task. Science CBSE, Class 10.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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(Note: In some of the questions more than one answer in correct).

1. Which of these is true regarding Foolish seedling disease.

It involves the internodal elongation in rice
It is caused by the fungus Gibberella zeae
It is caused by the fungus Gibberella fujikuroi
It involves the intranodal elongation in rice

2. Which one of these is correct regarding the physiological effects of ethylene?

Ethylene promotes the elongation of the stem and root of dicots
Ethylene is a gas that promotes the ripening of fruits such as tomato
Ethylene slows down the senescence of leaves and flowers

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