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Question

Choose the correct answers from the alternatives given..
Cyanobacteria are

A
photoautotrophs
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B
photoheterotrophs
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C
chemoautotrophs
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D
chemoheterotrophs
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Solution

The correct option is A photoautotrophs
Cyanobacteria or the blue-green algae are aerobic photoautotrophs. They require only water, carbon dioxide, inorganic substances and most importantly light.
Hence, the correct answer is, 'photoautotrophs'.

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