Question

4. Cyanobacteria and heterotrophic bacteria have been clubbed together in Eubacteria
of kingdom Monera as per the "Five Kingdom Classification" even though the two are
Vasth different from each other. Is this grouping of the two types of taxa in the same
kingdom justified? If so, why?​

Answer 1

Answer:

Yes, although vastly different from each other, the grouping of cyanobacteria and heterotrophic bacteria in Eubacteria in Kingdom Monera is justified because both of them have certain common characteristics like:

• Both are unicellular
• Both are prokaryotes and lack a well-defined nucleus.
• The primitive nucleus is devoid of a proper nucleolus or nuclear membrane
• The genetic material or the DNA is scattered in the cytoplasm
• Both of them reproduce asexually.

They both are highly contrasting in their methods of nutrition like cyanobacteria are autotrophs that prepare their own food; whereas, heterotrophic bacteria depends on some biomass for its food. Similarly, cyanobacteria are mostly aquatic whereas heterobacteria depends on a host.

Answer 2

Answer:

Yes, this grouping is justified.

Explanation:

As per definition, Eu-bacteria comprises of a large group of bacterial micro organisms that have simple body cell with rigid cell wall, and at times they possess one or more flagella for movement.

Eubacteria is seen to consist of Heterotrophic bacteria and Cyanobacteria.

Though both Heterotrophic bacteria and Cyanobacteria are characteristically different, but their grouping under Eubacteria is justified, since both Heterotrophic bacteria and Cyanobacteria are primitive, unicellular micro organisms, with simple body structure that is prokaryotic in nature.