With reference to mineral nutrition in plants, which one of the following pair is not correctly matched?A. Molybdenum - Required for nitrogen fixation and nitrate reductionB. Manganese - Required for intergrity of chloroplast membrane and for oxygen release in photosynthesisC. Iron - Required for development of chlorophyll and its pigments.D. Magnesium - involved in osmosis and ionic balance, and in opening and closing of stomata.

With reference to mineral nutrition in plants, which one of the follow

1.	With reference to mineral nutrition in plants, which one of the following pair is not correctly matched?A. Molybdenum - Required for nitrogen fixation and nitrate reductionB. Manganese - Required for intergrity of chloroplast membrane and for oxygen release in photosynthesisC. Iron - Required for development of chlorophyll and its pigments.D. Magnesium - involved in osmosis and ionic balance, and in opening and closing of stomata.
Answer» Correct Answer - 4

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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
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