Best defined function of manganese in green plants is
1. photolysis of water
2. Calvin cycle
3. nitrogen fixation
4. water absorption
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following is wrong statement?
1. Anabaena and Nostoc are capable of fixing nitrogen in free-living state also
2. Root nodule forming nirogen fixers live as aerobes under free-living conditions
3. Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins
4. Nitrosomonas and Nitrobacter are chemoautotrophs
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA nitrogen fixing microbe associated with Azolla in rice fields is
1. Spirulina
2. Anabaena
3. Frankia
4. Tolypothrix
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe function of leghaemoglobin in the root nodules of legumes is
(1) oxygen removal
(2) nodule differentiation
(3) expression of nif gene
(4) inhibition of nitrogenase activity
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyNitrifying bacteria
1. convert free nitrogen to nitrogen compounds
2. convert proteins into ammonia
3. reduce nitrates to free nitrogen
4. oxidize ammonia to nitrates
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn organism used as a biofertilizer for raising soyabean crop is
1. Azospirillum
2. Rhizobium
3. Nostoc
4. Azotobacter
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn element playing important role in nitrogen fixation is
1. molybdenum
2. copper
3. manganese
4. zinc
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following is not a micronutrient?
1. Molybdenum
2. Magnesium
3. Zinc
4. Boron
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe free-living, anaerobic nitrogen-fixer is
1. Beijerinckia
2. Rhodospirillum
3. Rhizobium
4. Azotobacter
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe common nitrogen-fixer in paddy fields is
1. Rhizobium
2. Azospirillum
3. Oscillatoria
4. Frankia
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology