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Q. No.The 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 & BiologyWhich of the folowing is a symbiotic nitrogen fixer?
1. Glomus
2. Azotobacter
3. Frankia
4. Azolla
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAbout 98 percent of the mass of every living organism is composed of just six elements
including carbon, hydrogen, nitrogen, oxygen and:
1. phosphorus and sulphur
2. sulphur and magnesium
3. magnesium and sodium
4. calcium and phosphorus
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following elements is not an essential micronutrient for plant growth?
1. Mn
2. Zn
3. Cu
4. Ca
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