Question
Which of the following statements about methanogens is not correct?
They can be used to produce biogas.
They are found in the rumen of cattle and their excreta.
They grow aerobically and breakdown cellulose-rich food.
They produce methane gas.
According to the text, methanogens grow anaerobically on cellulosic material to produce large amounts of methane along with CO2 and H2. They are found in the anaerobic sludge during sewage treatment and in the rumen of cattle where they help in the breakdown of cellulose. The excreta (dung) of cattle is rich in these bacteria, which are used to produce biogas (methane). Therefore, the statement that they grow aerobically is incorrect.
This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Microbes in Human Welfare. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.
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