Which of the following statements is El! correct regarding Cyanobacteria?
A. Cyanobacteria are gmm negative prokaryotes
B. They are autotrophic forms and the photosynthesis is of oxygenic type
C. Nostoc wrd Anabaena possess heterocysts in which atmospheric nitrogen is fixed
D. Unlike bacteri4 cell wall of cyanobacteria lack peptidoglycan
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b,c and d are correct I think so
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b,c,d is right answer mark me as brainlist
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