Natural Sciences

20 Characteristics of the Animal Kingdom

The animal kingdom

Also called the Metazoa Kingdom. It comprises a group of organisms and includes all existing animals on the planet.

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Animals are eukaryotic, multicellular organisms that are in turn Heterotrophs , which means that they obtain proteins from organic sources.

Most animals feed due to the ingestion of other organisms or the breakdown of genetic material.

About 2 million different species belong to this kingdom.

Characteristics of the Animal Kingdom

  1. All animals with the exception of sponges are composed of organizer cells in tissue.
  2. Most animals are trained to perform rapid movements.
  3. Because they are eukaryotes, they have a defined central nucleus and a nuclear membrane.
  4. They have symmetry which depends on their physical structure .
  5. They are heterotrophs because they must eat and absorb nutrients from other living beings because they do not have the ability to produce their own.
  6. They have a series of organs and tissues that make them different from others, thanks to them they have skin, muscles, organs, digestive systems, among others.
  7. They are characterized by being aerobic because they breathe either through the skin or with the oxygen obtained from the air.
  8. The animal kingdom has its origin in a microorganism that would be the genesis of them.
  9. They are also known as choanoflagellates and it is estimated that they existed 600 million years ago .
  10. The habitat is a place in which an animal species and a certain plant species live.
  11. They exist in aquatic and terrestrial habitats.
  12. Their diet is variable depending on the species.
  13. They can feed on plants and other species.
  14. They can be carnivores, herbivores, and omnivores.
  15. They have different reproduction patterns and life cycles .
  16. Their respiration is carried out in the mitochondria, due to a process that absorbs oxygen, releasing carbon dioxide and obtaining energy.
  17. The sexual reproduction encompasses all two – parent reproduction processes which includes two individuals .
  18. Some carry out asexual reproduction , this involves a single parent without the existence of a reproductive organ or sex cells.
  19. Vertebrate animals have backbones that support the body.
  20. They are capable of developing and being born in different ways depending on their species.

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