Vernalisation refers to

  1. The promotion of flowering by a period of high temperature
  2. The inhibition of flowering by a period of low temperature
  3. The promotion of flowering by a period of low temperature
  4. The inhibition of flowering by a period of high temperature
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Which of the following does not has two kinds of varieties?

  1. Wheat
  2. Radish
  3. Barley
  4. Rye
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The spring varieties are normally planted in…...and come to flower and produce grain……

  1. Autumn season, after the end of growing season
  2. Spring season, at the end of growing season
  3. Spring season, before the end of growing season
  4. Autumn season, at the end of growing season
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Winter varieties should be planted in

  1. Winter
  2. Autumn
  3. Spring
  4. Summer
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Winter varieties are harvested in

  1. Autumn
  2. Mid summer
  3. Mid Winter
  4. Spring
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Winter varieties resume their Growth in

  1. Spring
  2. Summer
  3. Winter
  4. Autumn
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Biennial plants are

  1. Monocarpic plants
  2. Flower for two seasons
  3. Flower in first season
  4. All of these
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Which of the following is not an example of of biennial plants?

  1. Sugarbeet
  2. Cabbage
  3. Carrots
  4. Rye
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Seed Dormancy is

  1. Controlled by external environment
  2. Controlled by endogenous conditions
  3. Controlled by external environment and as well as endogenous conditions
  4. Controlled by external environment only
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Which of the following is not a reason of seed being dormant?

  1. Impermeable and hard seed coat
  2. ABA
  3. Phenolic Acids, Para Ascorbic Acid
  4. External temperature
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