NEET BIOLOGY

Detailed explanation-1: -Under the five-kingdom classification given by R.H. Whittaker, prokaryotic organisms are placed in the kingdom Monera. Kingdom Monera has unicellular prokaryotic organisms. They do not have a well-developed nucleus or advanced cell, neither they possess any cell organelles.

Detailed explanation-2: -Who am I? Archaebacteria. I am unicellular, prokaryotic, auto or heterotrophic, reproduce asexually, and live in extreme environments.

Detailed explanation-3: -In fact, not only bacteria are unicellular but also archaea. Both bacteria and archaea are prokaryotic organisms. Unicellularity, though, is not exclusive to prokaryotes. Some eukaryotes live singly as well. Examples of single-celled eukaryotes are the unicellular algae, unicellular fungi, and protozoa.

Detailed explanation-4: -Microorganisms can be unicellular (single cell), multicellular (cell colony), or acellular (lacking cells). They include bacteria, archaea, fungi, protozoa, algae, and viruses. Bacteria are single celled microbes that lack a nucleus. Archaea are like bacteria, but they have different structures and properties.