Deficiency of which of the following elements delay flowering in plants?A. Fe, Mn, MoB. N, S, MoC. Ca, Mg, KD. N, K, S

Deficiency of which of the following elements delay flowering in plant

1.	Deficiency of which of the following elements delay flowering in plants?A. Fe, Mn, MoB. N, S, MoC. Ca, Mg, KD. N, K, S
Answer» Correct Answer - B Nitrogen deficiency causes yellowing of older leaves (chlrosis). Deficiency of nitrogen also causes dormancy of lateral buds, late flowering, purple colouratio and wrinkling of cereal grains molybdenum deficiency causes chlorotic interveinal mottling of the older leaves, flower formation is inhibited and also causes whip tail disease in cualiflower plants. sulphur deficiency causes yellowing of leaves and delay in flowering.

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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
A plant requires nitrogen and sulphur for itsA. cell wallsB. storage vacuolesC. enzymesD. energy stores
Name the mineral element that is component of ATP molecules.
How many ATP are required for the formation of one molecule of `NH_3 ` by the nitrogenase enzyme ?A. SixB. EightC. TwelvD. Sixteen
The major role of phosphorus in plant metabolism isA. O_(2) evolution during photosynthesisB. CO_(2) evolution during respirationC. create anaerobic conditionsD. generate metabolic energy
The given equation refers to ` N_ 2 + 8 e ^(-) + 16 ATP to 2NH_ 3 + H_ 2 + 16ADP + 16P_i`A. AmmonificationB. NitrificationC. DenitificationD. Nitrogen fixation
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

Deficiency of which of the following elements delay flowering in plants?A. Fe, Mn, MoB. N, S, MoC. Ca, Mg, KD. N, K, S

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