Ownclasses

Which one of the following is wrong statement?

  • Anabaena and Nostoc are capable of fixing nitrogen in free-living state also

  • Root nodule forming nitrogen fixers live as aerobes under free-living conditions

  • Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins

  • Nitrosomonas and Nitrobacter are chemoautotrophs

Answer

C.

Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins

Phosphorus is a component of DNA and RNA but not proteins.

Phosphorus is a component of DNA and RNA but not proteins.