Choose the correct one.A. C, H, O are called frame work elementsB. `Ca^(2+), Mg^(2+), K^(+)` are protoplasmic elementsC. C, H, O, N are balancing elementsD. All of the above

Choose the correct one.A. C, H, O are called frame work elementsB. `Ca

1.	Choose the correct one.A. C, H, O are called frame work elementsB. `Ca^(2+), Mg^(2+), K^(+)` are protoplasmic elementsC. C, H, O, N are balancing elementsD. All of the above
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Nitrogenase enzyme isA. sensitive to moleculer oxygenB. only present in prokaryotesC. present within the bacteroidsD. all of the above
Activity of nitrogenase enzyme depends onA. non-availability of ATPB. availability of nitric acidC. availability of ATPD. non-availability of nitric acid
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Name the mineral element that is component of ATP molecules.
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Presence of phosphorus in a plantA. Brings about healthy root growthB. Retards fruit ripeningC. Retards protein formationD. None of the above
On the basis of symptoms of chlorosis in leaves, a student inferred that this was due to deficiency of nitrogen. This inference could be correct only if we assume that yellowing of leaves apeared first inA. old leavesB. young leavesC. young leaves folowed by mature leaveD. mature leaves followed by young leaves
On the basis of symtoms of chlorosis in leaves, a student inferred that this was due to the deficiency of nitrogen. This inference could be correct only if yellowing of leaves appeared first inA. Young leavesB. Old leavesC. Young leaves followed by old leavesD. Old leaver followed by young leaves

Choose the correct one.A. C, H, O are called frame work elementsB. `Ca^(2+), Mg^(2+), K^(+)` are protoplasmic elementsC. C, H, O, N are balancing elementsD. All of the above

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