The correct answer is option A, Cyanobacteria are photoautotrophs
Explanation:
Being photosynthetic and aquatic, Blue green algaes are considered to be the Cyanobacteria and they belong to the category of aerobic photoautotrophs. The common essentials required for their survival are water, carbon dioxide, inorganic substances and light. Photosynthesis is their principal mode of energy metabolism. They are considered as an important contributor of oxygen in the Earth’s atmosphere.
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The answer is <span>Cyanobacteria are photoautotrophs.
</span><span>Cyanobacteria /saɪˌænoʊbækˈtɪəriə/, also known as Cyanophyta, is a phylum of bacteria that obtain their energy through photosynthesis. The name "cyanobacteria" comes from the color of the bacteria.</span>
