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The Binomial Concept of Classification

Binomial Concept of Classification

The Binomial Concept of Classification was introduced by Carolus Linnaeus in 1758. According to the divine concept, all the living beings were divided into two worlds.

  1. Plant kingdom ( Plantae )
  2. Animal kingdom (Animalia)
The Binomial Concept of Classification

1. Plant kingdom ( Plantae )

According to the Binomial Concept of Classification, living beings with the following qualities have been placed in the plant world –

  • Green plants, flesh, ferns, fungi, bacteria and multicellular marine plants and weeds found in immovable or stationary state are kept.
  • They are autotrophic.
  • Their cell wall is made of cellulose.
  • Bacteria and fungi are placed in the plant kingdom because of the hard cell wall present in them.
  • Apart from this, the unicellular eukaryotic cells in which chloroplasts are found have also been placed in the plant kingdom.

2. Animal kingdom (Animalia)

According to the Binomial Concept of Classification , living beings with the following qualities have been placed in the animal world –

  • In this, unicellular protozoa and multicellular animals have been kept.
  • Their cells lack cell wall.
  • Their physical structure is complex.
  • They have the ability to relocate.
  • They are Heterotrophic.
  • Unicellular eukaryotic cells, which show the action of movement and ingestion. They have also been kept in animals.
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Connective Link

The organism between any two kingdom or associations, in which the qualities of both associations are found, that organism is called the connecting link between those two associations, that is, the link connecting the two associations.

For example, Euglena is said to be a connecting link between the animal kingdom and the plant kingdom because it is capable of moving like animals with the help of flagella and due to the presence of chloroplast, it is also capable of producing food by the process of photosynthesis. are

Defects of The Binomial Concept of Classification

The following are the drawbacks of the two Binomial Concept of Classification –

  • Both prokaryotic and eukaryotic cells have been grouped together which is completely inappropriate.
  • Photosynthetic green plants and non-photosynthetic fungi are placed in the same group, which is wrong.
  • Euglena and slime fungi have been placed in both the kingdoms, which are not well.
  • Sponges, corals etc. are stationary animals, so they can be kept in the plant world due to the property of being fixed or immovable.
  • Viruses and bacteriophages are neither prokaryotic cells nor eukaryotic cells. Because of this they could not be classified properly.

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