Why don't cyanobacteria and bacteria reproduce by mitosis? because:
a. they are not organisms
b. they are not cells
c. they do not contain chromosomes
d. all of the above

They do not contain chromosomes. (Ans.C).

Explanation:

Cyanobacteria also known as blue-green algae, they are heterogeneous group of photosynthetic prokaryotic organisms. Like prokaryotes such as bacteria, cyanobacteria lack endoplasmic reticulum, mitochondria, membrane bound nucleus, and Golgi apparatus. Bacteria are simpler than other organisms, and single celled microbes.

Both bacteria and cyanobacteria reproduce through the asexual method either by binary fission in unicellular, multiple fission in colonial form or by spore formation, and fragmentation in filamentous species.

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