Answer
a. The species who are not dependent on others for their food are termed as autotrophic whereas the species who are dependent on others for their food are termed as heterotrophic. Methanogens produce methane gas independently while some bacteria consume methane gas which are basically dependent on the methanogens. Hence, those bacterias who consume methane gas are heterotrophic in nature.
b. These two bacterias are live in symbiotic association by providing benefits to each other. Bacterias provide suitable conditions to methanogens for a reaction while methanogens releases methane gas which is required by bacteria. Therefore, two bacterias are associated with each other.
Work Step by Step
a. The species who are not dependent on others for their food are termed as autotrophic whereas the species who are dependent on others for their food are termed as heterotrophic. Methanogens produce methane gas independently while some bacteria consume methane gas which are basically dependent on the methanogens. Hence, those bacterias who consume methane gas are heterotrophic in nature.
b. These two bacterias are live in symbiotic association by providing benefits to each other. Bacterias provide suitable conditions to methanogens for a reaction while methanogens releases methane gas which is required by bacteria. Therefore, two bacterias are associated with each other.