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In which kingdom would you classify the archaea and nitrogen-fixing bacteria if the five-kingdom system of classification is used?
(a)Plantae
(b)Fungi
(c)Protista
(d)Monera

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Important Questions on Biological Classification
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I. Cyanobacteria are referred to as blue-green algae.
II. They perform oxygenic photosynthesis in chloroplasts.
II. The red-colour of red-sea is due to the presence of a cyanobacterial species Trichodesmium erythraeum.
IV. All the cyanobacterial species can fix atmospheric in specialised cells called heterocysts.

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