83. Which one of the following is wrong statement ?
(1) Nitrosomonas and Nitrobacter are chemoautotrophs
(2) Anabaena and Nostoc are capable of fixing nitrogen in free-living state also
(3) Root nodule forming nitrogen fixers live as aerobes under free-living conditions
(4) Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins
(1) Nitrosomonas and Nitrobacter are chemoautotrophs
(2) Anabaena and Nostoc are capable of fixing nitrogen in free-living state also
(3) Root nodule forming nitrogen fixers live as aerobes under free-living conditions
(4) Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins