Mitochondria are non-existent in –

(a) Red algae

(b) Green algae

(c) Blue green algae

(d) Brown alga

Dear Student!

The answer to your question is blue green algae, blue green algae are also known as cyanobacteria and it belongs to the category of bacteria which lacks cell organelles.. 

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 a) Red Algae

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Abhinav but i think it is blue green algae because we can also call it as cyanobacteria.

Please think on it 

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