What Are Methanogens

Q.

Organisms called Methanogens are most abundant in a:

1. Polluted stream

2. Hot spring

3. Cattleyard

4. Sulphur rock

Q. Group of bacteria used in biogas production is

1. Eubacteria
2. Methanotrophs
3. Organotrophs
4. Methanogens

Q. Methanogens, growing anaerobically on cellulosic material, produce

1. methane
2. methane and carbon dioxide
3. methane and hydrogen
4. methane, carbon dioxide and hydrogen

Q. Methanogens belong to

1. Slime moulds
2. Eubacteria
3. Archaebacteria
4. Dinoflagellates

Q. Which of the following statements about methanogens is not correct?

1. They can be used to produce biogas
2. They are found in the rumen of cattle and their excreta
3. They grow aerobically and breakdown cellulose-rich food
4. They produce methane gas

Q. Which one is used in biogas generation?

1. Methanobacterium
2. Rhizobium
3. Agrobacterium
4. Azotobacter

Q. Methanogens, growing anaerobically on cellulosic material produce.

1. Methane and carbon dioxide
2. Methane
3. Methane and hydrqgen
4. Methane, carbon dioxide and hydrogen

Q. Which is correctly paired?

1. Aspergillus niger - Production of lactic acid
2. Trichoderma polysporum - Lowers blood cholesterol
3. Saccharomyces cerevisiae - Production of citric acid
4. Methanogenic bacteria - Gobar gas formation

Q. Last step in biogas production is carried out by

1. Fermentative microbes
2. Decomposer microbes
3. Methanogens
4. Thermoacidophiles

Q. Group of bacteria used in biogas production is

1. Eubacteria
2. Organotrophs
3. Methanotrophs
4. Methanogens