Question:
Which of the following kingdoms has no well defined boundaries?
Which of the following kingdoms has no well defined boundaries?
Updated On: Jul 7, 2022
- Monera
- Protista
- Fungi
- None of these
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The Correct Option is B
Solution and Explanation
Although all single-celled eukaryotes (except some unicellular algae, e.g., Chlamydomonas, Chlorella etc., fungi, e.g., yeasts and animals, which are placed in their respective kingdoms along with their closely related multicellular organisms) are placed in Kingdom Protista, yet its boundaries are not well defined.
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Concepts Used:
Biological Classification
The process of grouping living organisms into categories is called biological classification. The most modern 5-kingdom classification was put ahead by an eminent scientist R.H.Whittaker. The five-kingdom classification is based on the criteria like cell structure, mode of nutrition, body form, and reproduction. One of the most important characteristics of this system is that it follows the evolutionary sequence of living organisms. The organisms are classified into distinct taxa or levels like Kingdom, Phylum, Division, Class, Order, Family, Genus, and Species. The 5 kingdoms are as follows:
