Question

Which of the following bacteria can perform photosynthesis?
a) anabaena b) azatobacter c) nostoc

Answer 1

Azobacter , Anabaena and Nostoc are chemosyntheic autotropes.
Only Cyanobacteria (among bacteria) is also known blue green algae , perform photosynthesis as it is a photosynthetic autotropes.

Hope this much information is enough.

Answer 2

the correct answer is none of these

Oxygenic photosynthetic bacteria perform photosynthesis in a similar manner to plants. They contain light-harvesting pigments, absorb carbon dioxide, and release oxygen. Cyanobacteria or Cyanophyta are the only form of oxygenic photosynthetic bacteria known to date.