Select the correct combination of the statements (A-D) rega…

Biology Biological Classification Previous Year Questions Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

Select the correct combination of the statements (A-D) regarding the characteristics of certain organisms

Methanogens are archaebacteria which produce methane in marshy areas. , ,

Nostoc is a filamentous blue – green algae which fixes atmospheric nitrogen. and and , and

Chemosynthetic autotrophic bacteria synthesize cellulose from glucose. and

Mycoplasma lack a cell wall and can survive without oxygen. The correct statements are:

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The correct answer is:

Methanogens produce methane in anaerobic habitats.

Nostoc is nitrogen-fixing cyanobacteria with heterocysts.

Mycoplasma lack cell wall and can survive without oxygen.

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