Question

What are the 8 kingdoms?

Answer 1

Kingdom:

1. Kingdom is a taxonomic rank in biology that is made up of more compact groups called phyla (or divisions, in plants).

The 8 kingdom classification, by Cavalier-Smith includes the following kingdoms:

Eubacteria

Eubacteria are prokaryotic microorganisms that have a single cell that lacks a nucleus and one circular chromosome that contains DNA.

Archaebacteria

1. The oldest known living things on earth are archaebacteria.
2. They are categorised as bacteria because, when viewed under a microscope, they resemble bacteria and are members of the Monera kingdom.

Archezoa

One of the kingdom-level taxa postulated by Cavallier-Smith, which is thought to be an intermediate form between prokaryotes and eukaryotes because it contains the oldest unicellular eukaryotes with a nucleus and rod-shaped chromosomes but no mitochondria or plastid.

Protozoa

1. A category of single-celled eukaryotes that feed on organic substances, such as other microbes or organic tissues and waste, are known collectively as protozoa.
2. They can be parasitic or free-living.

Chromista

Chromista is a kingdom of eukaryotic organisms that includes single-celled and multicellular species that have comparable characteristics in their photosynthetic organelles (plastids).

Plantae

1. All plants are included in Kingdom Plantae.
2. These organisms are eukaryotic, multicellular, and autotrophic.
3. A stiff cell wall can be found in plant cells.
4. The pigment chlorophyll and chloroplast found in plants are necessary for photosynthesis.

Fungi

Fungi are eukaryotic organisms that include microorganisms such as yeasts, moulds and mushrooms.

Animalia

1. Kingdom Animalia constitutes all animals. Amongst the five kingdoms, the largest kingdom is the animal kingdom.
2. Animals are multicellular eukaryotes.
3. However, like plants, they do not possess chlorophyll or a cell wall.
4. Therefore, members of the animal kingdom exhibit a heterotrophic mode of nutrition.