Which of the following is incorrect about Cynobacteria?
(1) They have chlorophyll 'a' similar to green plants
(2) They are photoautotrophs
(3) They lack heterocysts
(4) They often form blooms in polluted water bodies
(1) They have chlorophyll 'a' similar to green plants
(2) They are photoautotrophs
(3) They lack heterocysts
(4) They often form blooms in polluted water bodies