Alcohol Dehydrogenase needs which of the following ion for activation?

(1) Zn++

(2) Mo

(3) Cr

(4) Mg++

Subtopic:  Criteria for Essentiality of Elements |
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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 |
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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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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 Phosporus?

(1) Dihydrogen Phosphate, Hydrogen phosphate

(2) Phosphoric Acid

(3) Phosphorite

(4) Phosphic Acid

Subtopic:  Mineral Function |
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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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Which of the following is not associated with potassium ions?

(1) Maintain anion-cation balance in cells

(2) Involved in protein synthesis

(3) Involved in opening and closing of stomata and activation of enzyme

(4) Maintenance of the turgidity of the cells and all phosphorespiration reactions

Subtopic:  Mineral Function |
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Calcium is required by

Find the incorrect one.

(1) Meristematic and Differentiating tissues

(2) Used in synthesis of Cell membrane as calcium pectate in the middle lamella

(3) It accumulates in older leaves

(4) It is needed during the formation of mitotic spindle

Subtopic:  Mineral Function |
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I. Regulation of metabolic activities

II. Activation of certain enzymes

III. Involved in normal functioning of the cell wall and required for the formation of mitotic spindle.

Which of the following ion is best suitable for it?

(1) Ca++

(2) K+

(3) Zn++

(4) Cl-

Subtopic:  Mineral Function |
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