1.

Which one of the following living organisms completely lacks a cell wallA. CyanobacteriaB. sea-fan (Gorgonia)C. SaccharomycesD. Blue-green algae

Answer» Correct Answer - B
Sea-fan (Gorgonia ) belongs to : kingdom-Animalia, phylum-Cnidaria and order-Gorgonacea. As, it is on animal, thus it lacks cell wall unlike cyanobacteria or blue-green algae (kingdom-Monera) have cell wall which is composed of peptidoglycan.
Saccharomyces is a genus of kingdom fungi which includes many species of yeast. Their cell wall is made up of chitin.


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