Select the correct combination of the statements (1-4) regarding the characteristics of certain organisms
1. Methanogens are archaebacteria which produce methane in marshy areas
2. Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen
3. Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
4. Mycoplasma lacks a cell wall and can survive without oxygen.
The correct statements are:
The correct statements are
Methanogens are archaebacteria which produce methane in marshy areas.
Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen
Mycoplasma lacks a cell wall and can survive without oxygen.
Statement 3 after correction: Chemosynthetic organisms use chemical reactions to convert inorganic substances into nutrients. Example: Sulfur bacteria, Nitrogen bacteria.