Question

The classification system developed in the early 1700s divided living organisms into plant and animals. Today, that has been expanded into five kingdoms. What invention was most responsible for creating the need for the additional three kingdoms?

Answer 1

Study of nucleus structures, number of cells in body, cell wall, chloroplasts etc., lead to further classification of organisms from two kingdoms to five kingdoms.

Explanation:

During the early seventeenth century, organisms were classifed into two broad groups plants and animals by C, Linnaeus. But further detail study and discovery of nucleus structures, number of cells in body, presence or absence of cell wall, chloroplasts etc., lead to further classification of organisms into following five Kingdom.

1. Monera:-Organisms with prkaryotic of nucleus nucleus e.g., bacteria, Cyanobacteria.
2. Protista:-Unicellular and eukaryotic organisms e.g., Amoeba, Chlorella etc.
3. Fungi:-Eukaryotic, cell wall without chloroplasts i.e., heterotrophic e.g., Fungi.
4. Animalia:-Multicellular, Eukaryotic, heterotrophic without cell wall e.g., higher animals
5. Plantae:-Multicellular, Eukaryotic, autorotrophic with cell wall e.g., higher plants