Nitrogen is mainly absorbed as

(1) Nitrite

(2) Nitrate

(3) Ammonium

(4) All of these

Subtopic:  Mineral Function |
 62%
From NCERT
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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%
From NCERT
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Phosphorus is not a component of

(1) Cell membrane

(2) Certain Proteins

(3) Nucleosides

(4) Nucleotides

Subtopic:  Mineral Function |
 72%
From NCERT
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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 |
 58%
From NCERT
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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 |
From NCERT
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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 |
From NCERT
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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 |
 91%
From NCERT
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Which of the following is not related to Mg?

(1) Absorbed as Mg++

(2) Activates the enzymes of respiration, photosynthesis

(3) Involved in the synthesis of DNA and RNA

(4) Involved in the formation of spindle formation

Subtopic:  Mineral Function |
 86%
From NCERT
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Which of the following ion is important for maintaining ribosome structure?

(1) Mg++

(2) Mn++

(3) Ca++

(4) Zn++

Subtopic:  Mineral Function |
 89%
From NCERT
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The component of ring structure of chlorophyll is

(1) Mg

(2) Ca

(3) Zn

(4) Cl

Subtopic:  Mineral Function |
 95%
From NCERT
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