Which of the following is not kept in beneficial elements?

  1. Na
  2. Si
  3. Co
  4. K
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Which of the following is a beneficial element?

  1. Se
  2. Fe
  3. B
  4. Cl
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The beneficial elements are

  1. Required by higher plants
  2. Na,Si,Co,Se
  3. Other than 17 essential elements
  4. All of these
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Which of the following is not a component of biomolecule is not contribute in structural elements of cell?

  1. C
  2. O
  3. N
  4. Mg
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Which of the following is not a component of  energy related chemical compound in plant?

  1. Magnesium in chlorophyll
  2. Phosphorus in ATP
  3. Carbon in DNA
  4. Both A and C
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Which of the following act as an activator for ribulose bisphoshate carboxylase oxygenase?

  1. Zn++
  2. Mg++
  3. Mn+
  4. Ca++
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Phosphoenol pyruvate carboxylase needs which of the following ions for activation?

  1. Zn++
  2. Mg++
  3. Mn++
  4. Ca++
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Nitrogenase needs which of the following ion for activation?

  1. Cr
  2. Mo
  3. W
  4. Sg
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Alcohol Dehydrogenase needs which of the following ion for activation?

  1. Zn++
  2. Mo
  3. Cr
  4. Mg++
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For the opening and closing of stomata which of the following ion is important?

  1. Ca++
  2. Mo
  3. Cr
  4. K+
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