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Question

The most widespread group of organisms on the earth belongs to kingdom

A
Monera
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B
Protista
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C
Fungi
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D
Plantae
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Solution

The correct option is A Monera
R. H. Whittaker proposed the five kingdom classification including monera, protists, fungi, plants and animals. The kingdom Monera is considered as the most primitive group. The kingdom Monera includes organisms such as the archaebacteria, bacteria, cyanobacteria (BGA), and filamentous actinomycetes. There is diverse range of prokaryotic organisms which are placed under this kingdom. These organisms are unicellular or multicellular prokaryotes which do not have well-developed cell organelles such as the nucleus, mitochondria, chloroplast, etc.
Thus, the correct answer is option A.

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