Cyanobacteria cells contain phycocyanin and chlorophyll, which can synthesize inorganic substances into organic substances through photosynthesis, so cyanobacteria are autotrophs. Cyanobacteria is a kind of large single-celled prokaryote with a long history of evolution, Gram-negative staining, no flagella, chlorophyll a, but no chloroplast (algae different from eukaryotes), which can produce oxygen and photosynthesis.

Cyanobacteria belong to autotrophs because ()

A. There are phycocyanin and chlorophyll in cells, which can be used for photosynthesis.

B. Organic substances such as protein can be synthesized in cells.

C. there are chloroplasts in the cells, which can be used for photosynthesis.

D. you can live independently without parasites.

A: A.

Cyanobacteria propagation method

There are two ways to reproduce cyanobacteria. One is vegetative propagation, which includes direct cell division (fission), population division and filamentous algae production fragments. The other is that some cyanobacteria can produce endospore or ectospores for asexual reproduction. Spores have no flagella. No real cyanobacteria have been found to reproduce sexually.