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Biology
Plant Growth and Development
85 questions from 33 papers, each with its answer.
- 85 questions
- 33 papers
- 2.41% of Biology
Plant Growth Regulators – Gibberellins
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Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.Spraying sugarcane crop with gibberellins increases the length of the stem, thus increasing the yield by as much as 20 tonnes per acre.
Seed Dormancy
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Which of the following is not an inhibitory substance governing seed dormancy?Abscisic acid, phenolic acid and para-ascorbic acid are inhibitors that govern seed dormancy. Gibberellic acid breaks seed dormancy – it activates the synthesis of $\alpha$-amylase, which breaks down stored starch into simple sugars. So gibberellic acid is not an inhibitory substance.
Growth – Phases of Growth
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The process of growth is maximum during:In exponential (sigmoid) growth, the initial growth is slow (lag phase), and then it increases rapidly at an exponential rate in the log (exponential) phase. So growth is maximum during the log phase.
That is every question in Plant Growth and Development for this filter.
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