Free NEET Biology multiple-choice questions on Nitrogen Metabolism. Attempt each question and reveal the answer with a full explanation.
Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing micro-organism crotalaria juncea cycas revoluta cicer arietinum casuarina equisetifolia Match Column-I with Column-II. array llll ; & Column-I & ; & Column-II (a) & Nitrococcus & (i) & Denitrification (b) & Rhizobium & (ii) & Conversion of ammonia to nitrite (c) & Thiobacillus & (iii) & Conversion of nitrite to nitrate (d) & Nitrobacter & (iv) & Conversion of atmospheric nitrogen to ammonia array Choose the correct answer from options given below. a-i, b-ii, c-iii, d-iv a-iii, b-i, c-iv, d-ii a-iv, b-iii, c-ii, d-i a-ii, b-iv, c-i, d-iii Which of the following plants has association with Frankia ? Lentils Alfalfa Alnus Sweet pea Thiobacillus is a group of bacteria helpful in carrying out (1) Denitrification (2) Nitrogen fixation (3) Chemoautotrophic fixation (4) Nitrification Which one of the following produces nitrogen fixing nodules on the roots of Alnus? Frankia Rhodospirillum Beijerinckia Rhizobium Which of following organisms cannot fix nitrogen? A. Azotobacter B. Oscillatoria C. Anabaena D. Volvox E. Nostoc Choose the correct answer from the options given below: E only A only D only B only All of the following statements concerning the Actinomycetous filamentous soil bacterium Frankia are correct EXCEPT that Frankia - Forms specialized vesicles in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanoids Can induce root nodules on many plant species Like Rhizobium, it usually infects its host plant through root hair deformation and stimulates cell proliferation in the host's cortex Cannot fix nitrogen in the free-living state Which of the following is a symbiotic nitrogen fixer ? Azolla Glomus Azotobacter Frankia The first stable product of fixation of atmospheric nitrogen in leguminous plants is NO2- Ammonia NO3- Glutamate The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are Nitrate alone Ammonia and oxygen Ammonia and hydrogen Ammonia alone