Question

In the five kingdoms of classification of R. H. Whittaker, how many kingdoms contain eukaryotes?
(a)Four
(b)One
(c)Two
(d)Three

Answer 1

Hint: The primitive unicellular organisms were the group of prokaryotes while the advanced organisms come under the eukaryotes.

Complete answer:
The five Kingdom classification of R. H. Whittaker consists of five kingdoms, namely: Monera, Protista, Fungi, Plantae, and Animalia. All the four kingdoms are eukaryotes except Monera. Thus, four kingdoms are eukaryotes.

Additional information:
-The classification of organisms based on the kingdoms was first introduced by Carolus Linnaeus in his two-kingdom classification.
-The five kingdoms were classified based on their structure and function.
-Monera came under prokaryotes as they lack a true nucleus and membrane-bound organelles.
-Earlier fungi were categorized under kingdom Plantae, but after study, it has been found that they are completely different from Plantae., thus grouped under kingdom fungi.
-Prokaryotes are basically and commonly the bacteria.
-Eukaryotes are those organisms having membrane-bound cell organelles along with a true nucleus surrounded by a double-layered nuclear membrane.
-The cell organelles are unique to eukaryotes, and they may be multicellular.
-Animals, plants, and fungi are the most common type of eukaryotes, while the other eukaryotes are protists.
-They can reproduce by both sexual methods (meiosis and gamete) and asexually (mitosis).

So, the correct answer is ‘Four.’

Note: The word prokaryote is derived from the Greek word pro meaning ‘before’ and karyon meaning ‘but or ‘kernel.’ The term eukaryote was derived from the Greek word eu meaning ‘well’ or ‘good’ and karyon, meaning ‘nut.’ Eukaryotes evolved during the Proterozoic eon about 1.6 – 2.1 million years ago. The terms prokaryotes and eukaryotes were reintroduced by the Canadian microbiologist Roger Stanier and the Dutch-American Microbiologist C. B. Van Niel in 1962.