Which of the following may be used in the reclamation of soil?

Which of the following are the smallest living cells,lack a cell wall,are pathogenic to both plants and animals,and can survive without oxygen?

The chief component of the bacterial cell wall is:

Statement $X$: Methanogens are responsible for the production of methane.
Statement $Y$: They can survive in acidic and high-temperature conditions.

Cyanobacteria and heterotrophic bacteria have been clubbed together in eubacteria of kingdom-Monera as per the "five kingdom classification", even though the two are vastly different from each other. Is this grouping of the two types of taxa in the same kingdom justified? If so, why? Discuss the cellular composition of cyanobacteria and heterotrophic bacteria that make them classified as eubacteria.

Oxygenic photosynthesis is found in . . . . . . .