Wh yare blue green algae prokaryotic while other algae (green, brown, red) are not?

Question

this is for zoology :)

Answer 1

It has a different cell structure because it is not a true alga.

The term “blue green algae” is a misnomer and is not used much in scientific circles. It is called “cyanobacteria” or just blue-greens.

Although not true algae, cyanobacteria are thought to have evolved into the eukaryotic algae of today. Performing oxygenic photosynthesis, it is a very old prokaryotic organism dating from about 2.8 billion years ago.

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