Question:

A kingdom common to unicellular animals and plants is

  • Monera
  • Plantae
  • Fungi
  • Protista
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The Correct Option is D

Solution and Explanation

R H Whittaker divided living organisms into five kingdoms viz, Monera, Protista, Fungi, Plantae and Animalia. Kingdom-Protista includes eukaryotic, unicellular, autotrophic or heterotrophic organisms (both plants and animals) like flagellates, diatoms, dinoflagellates, slime moulds, sarcodina, etc. The major group of Protista includes photosynthetic protists (algae), consumer- decomposer protists (slime moulds) and protozoan protists.
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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:

Biological Classification