Which of the following is not correct about Gibberellins?

  1. Another kind of promotors PGR
  2. There are more than 100 Gibberellins
  3. Found in Fungi and higher plants
  4. The first and most intensively studied form of Gibberellins is GA2
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Which of the following statements is correct?

  1. All GAs are basic
  2. All GAs are Acidic
  3. Most of the GAs are Acidic
  4. Most of the GAs are basic
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Which of the following is not a Physiological effect of Gibberellins?

  1. Increase in the length of the grape stalks
  2. They cause fruits like Apple to elongate and improve it's shape
  3. They also delay senescence
  4. They can shorten the market period for fruits
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Which of the following is a Physiological effect of Gibberellins?

  1. GA3 is used to speed up the malting process in brewing industry
  2. They promote senescence
  3. They shorten the market period
  4. Induce parthenocarpy in tomatoes
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Spraying sugarcane crop with gibberellins increases the length of the stem and increase the length by

  1. 20 tonnes per Km
  2. 20 tonnes per acre
  3. 40 tonnes per acre
  4. 40 tonnes per Km
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GAs hastens the maturity period in

  1. Pineapple
  2. Conifers
  3. Cactus
  4. Tomatoes
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Early seed production in…….. can be done by GAs

  1. Pineapple
  2. Grapes
  3. Tomatoes
  4. Conifers
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Gibberellins does not  promote bolting in

  1. Beet
  2. Cabbage
  3. Plants with rosette habit
  4. Pineapple
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Bolting is

  1. Internode elongation just prior to flowering
  2. Internode elongation just after flowering
  3. Reduction in stem length just prior to flowering
  4. Reduction in stem length just after flowering
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Which of the following PGRs have isolated from autoclaved herring sperm DNA?

  1. Cytokinins
  2. Gibberellins
  3. Auxin
  4. Ethylene
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