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

Select the correct combination of the statements (A-D) regarding the characteristics of certain organisms. A. Methanogens are Archaebacteria, which produce methane in marshy areas. B. Nostoc is a filamentous blue-green algae, which fixes atmospheric nitrogen. C. Chemosynthetic autotrophic bacteria synthesize cellulose from glucose. D. Mycoplasma lack a cell wall and can survive without oxygen.
  1. B, C
  2. A, B, C
  3. B, C, D
  4. A, B, D

Solution

Methanogens are archaebacteria, which produce methane in marshy areas. Nostoc is a blue-green alga, which fixes atmospheric nitrogen. Chemosynthetic autotrophs oxidize inorganic substances to produce energy and help in the cycling of minerals. Mycoplasmas are a group of eubacteria that lack a rigid cell wall and can survive without oxygen.

Asked in: NEET 2010 (Mains)

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