Question

Read the following statements regarding methanogens and select the correct option.
(i) They are included in the group Archaebacteria.
(ii) They are responsible for the production of biogas in gobar gas plants.
(iii) They live in hot sulphur springs.
(iv) They are strictly anaerobic.

• A. Statements (i) and (ii) are correct.
• B. Statements (i), (ii) and (iv) are correct.
• C. Statements (ii), (iii) and (iv) are correct.
• D. All statements are correct.

Answer 1

The correct option is A Statements (i) and (ii) are correct.

Archaebacteria differ from other bacteria in having a different cell wall structure and this feature is responsible for their survival in extreme conditions. Methanogens are present in the gut of several ruminant animals such as cows and buffaloes and they are responsible for the production of methane (biogas) from the dung of these animals. Methanogens are obligate anaerobes.

So the correct option is "Statement(i) and (ii) are correct".