Which of the following pairs is incorrect?

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Question

(C) $Spirogyra$ is a filamentous green alga.$Chlamydomonas$ is a unicellular green alga.$Volvox$ forms colonial structures.$Nostoc$ is a cyanobacteriu

Vedclass · Accepted Answer

Nostoc - Red algae

Vedclass · Answer

(C) $Spirogyra$ is a filamentous green alga.$Chlamydomonas$ is a unicellular green alga.$Volvox$ forms colonial structures.$Nostoc$ is a cyanobacterium (blue-green alga), not a red alga. Red algae belong to the class $Rhodophyceae$ (e.g., $Polysiphonia$, $Porphyra$).Therefore, the pair $Nostoc - 	ext{Red algae}$ is incorrect.

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