Question

Methanogens belongs to
A) Slime mould
B) Eubacteria
C) Archaebacteria
D) Dinoflagellate

Answer 1

Hint:Methanogens are the bacteria which produces methane gas. This methane gas is highly poisonous for human beings and can cause respiratory disease and also lungs collapse.

Complete answer:
A) Slime mould :- slime mould belongs to the kingdom Protista. It is a type of fungus which does not consist of chitin cell membranes but still it is studied under the Protista and known as fungus.
B) Eubacteria :- Eubacteria is a type of single cells prokaryotic microorganisms that present in the environment. These cells do not consist of membrane bound cell organelles inside the cell. They are of different shape and size that is rod shape, cone shape and spiral in structure.
C) Archaebacteria :- Archaebacteria are the microorganisms that are prokaryotic in nature and can sustain at highly adverse conditions like high temperature, low Ph., in any hot spring. These organisms have the ability to make their survival possible if conditions are not favourable for them. As they are prokaryotic so they do not have specific membrane bound cell organelles. Some examples of Archaebacteria are methanogens.
D) Dinoflagellate :- Dinoflagellate is a type of unicellular eukaryotic organism. It belongs to the algae group of the organisms. They are mostly present in marine aquatic habitats. They consist of flagella for the movement inside the water.

From the above we come to know that the methanogens belong to the Archaebacteria group of the organisms.

Hence the correct answer is option ‘C’.

Note:
i) Algae is also known as the planktons .
ii) Bacteria are mostly prokaryotic in nature; they only consist of cell wall (optional) and cell membrane. Here nucleus also does not have its membrane, genetic material is present as such inside the cytoplasm.