Microbiology - Micro Organisms - Discussion

The oldest eukaryotic is diplomonads.

Archaea belongs to prokaryotic not eukaryotic.

The answer is A : diplomonads like Giardia.

Giardia lamblia is a binucleated, flagellated protozoan parasite that inhabits the upper small intestine of its vertebrate hosts. The entire life cycle, which can be completed in vitro, is simple with cycling between a vegetative trophozoite and a highly resistant cystic form. The parasite is one of the earliest diverging eukaryotes known and more than 95% of the genome is sequenced. This makes Giardia an excellent model system for studies of basic eukaryotic processes like cell differentiation.

Archae is a prokaryote not a eukaryote. In the question, it was asked about the bacteria which was bacteria which resembles archae.

At the pre-historic time, there were meteor showers and other natural disasters.

Archaea bacterias are the only to have been survived in that climate as Carl Woese differentiated it in his 7 kingdom classification.

So they can be the first one.

Diplomonads are the oldest Eukaryotic organism.

They are parasites in humans.

Apart from this Protists, fungi and animals are also Eukaryotic.

Archaea have some character related to eukaryotic but it can't be considered under eukaryotic organisms.

Archaea have some character related to eukaryotic but it can't be considered under eukaryotic organisms.

In archaea, an absence of nuclear membrane temperature. It is the unique feature that distinguishes them from bacteria.

Guys what is the difference between archaea & bacteria?