Which of the following organisms is multicellulose?
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Chlamydomonas
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Chlorella
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Cyanobacteria
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Spirogyra
D
Correct answer
Explanation
Spirogyra is a filamentous green alga that is multicellular, consisting of chains of cylindrical cells arranged in a filament. Chlamydomonas and Chlorella are unicellular green algae, while cyanobacteria (though they can form colonies) are fundamentally unicellular prokaryotes.