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Q.
In Whittaker's classification, which kingdom is the main producer?
NTA AbhyasNTA Abhyas 2020
Solution:
Five-Kingdom Classification-
Robert H. Whittaker (1969), an American taxonomist, had proposed a five-kingdom classification of living organisms on the basis of the following major criteria:
• Cell organization:
• Body organization
• Mode of nutrition
• Source of nutrition
• Major Ecological Role
• Phylogenetic relationship
In five kingdom classification system, the Monerans are thought to have given rise to the kingdom of Protista, from which the remaining kingdoms of multicellular organisms i.e. Fungi, Plantae and Animalia have evolved along separate lines.
Other characteristics which were later considered included mode of reproduction and motility. The presence or absence of a cell was never a characteristic feature for the criteria of the classification.
The five kingdoms are Monera, Protista, Fungi, Plantae and Animalia.
Protists are a group of all the eukaryotes that are not fungi, animals, or plants. As an outcome, it is a very diverse group of organisms. Protists can look very diverse from each other. Few are tiny and unicellular, like an amoeba, and some are large and multicellular, like seaweed.
As first producers, protists feed an enormous proportion of the world's aquatic species. (On land, terrestrial plants serve as primary producers. ) In fact, roughly one-quarter of the world's photosynthesis is performed by protists, specifically dinoflagellates, diatoms, and multicellular algae.