Which of the following act as an activator for ribulose bisphoshate carboxylase oxygenase?

(1) Zn++

(2) Mg++

(3) Mn+

(4) Ca++

Subtopic:  Criteria for Essentiality of Elements |
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Phosphoenol pyruvate carboxylase needs which of the following ions for activation?

(1) Zn++

(2) Mg++

(3) Mn++

(4) Ca++

Subtopic:  Criteria for Essentiality of Elements |
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Nitrogenase needs which of the following ion for activation?

(1) Cr

(2) Mo

(3) W

(4) Sg

Subtopic:  Criteria for Essentiality of Elements |
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Alcohol Dehydrogenase needs which of the following ion for activation?

(1) Zn++

(2) Mo

(3) Cr

(4) Mg++

Subtopic:  Criteria for Essentiality of Elements |
 87%
Level 1: 80%+
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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+

Subtopic:  Criteria for Essentiality of Elements |
 93%
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Nitrogen

Find the wrong one.

(1) Essential nutrient element required by plants in the greatest amount

(2) It is absorbed mainly as nitrite

(3) It is required by all parts of the plants particularly the meristematic tissue and metabolically active cells

(4) One of the major constituents of proteins, Nucleic Acid and vitamins

Subtopic:  Nitrogen Nutrition in Plants |
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Level 1: 80%+
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Nitrogen is mainly absorbed as

(1) Nitrite

(2) Nitrate

(3) Ammonium

(4) All of these

Subtopic:  Mineral Function |
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Which of the following form is absorbed for the requirement of Phosphorus?

(1) Dihydrogen Phosphate, Hydrogen phosphate

(2) Phosphoric Acid

(3) Phosphorite

(4) Phosphoric Acid

Subtopic:  Mineral Function |
 71%
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Phosphorus is not a component of

(1) Cell membrane

(2) Certain Proteins

(3) Nucleosides

(4) Nucleotides

Subtopic:  Mineral Function |
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Which of the following ion is required more in meristematic tissues, buds, leaves and root tips?

(1) K+

(2) Cl-

(3) P

(4) N

Subtopic:  Mineral Function |
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Level 3: 35%-60%
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