Question

Select the correct combination of the statements (i - iv) regarding the characteristics of certain organisms.
(i) Methanogens are archaebacterial which produces methane in marshy areas.
(ii) Nostoc is a filamentous blue-green alga which fixed atmospheric nitrogen.
(iii) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
(iv) Mycoplasma lacks a cell wall and can survive without oxygen.

• A. (ii) and (iii)
• B. (i), (ii) and (iii)
• C. (ii), (iii) and (iv)
• D. (i), (ii) and (iv)

Answer 1

The correct option is D (i), (ii) and (iv)

Methanogens produce methane gas, nostoc fixes atmospheric nitrogen, mycoplasma lacks a cell wall and can survive without oxygen.

So, the correct option is '(i), (ii) and (iv)'.