Animal: Difference between revisions
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| Mode of nutrition || [[heterotrophic organism]] || some plants, some protists || most plants (including algae), fungi | | Mode of nutrition || [[heterotrophic organism]] || some plants, some protists || most plants (including algae), fungi | ||
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| Nature of birth || embryos pass through a blastula stage || none || all other kingdoms | |||
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The cells of animals are called [[animal cell]]s. These differ in many important respects from the cells of organisms in other kingdoms. | The cells of animals are called [[animal cell]]s. These differ in many important respects from the cells of organisms in other kingdoms. | ||
Latest revision as of 16:41, 27 May 2012
Definition
The term animal is used to refer to any living organism that falls in the animal kingdom, one of the kingdoms in the six-kingdom system of classification of species (the other kingdoms are plants, bacteria, archaea, fungi and protists). The following attributes collectively separate animals from other living organisms:
| Attribute | Value for animals | Other kingdoms that share (or may share) this attribute value | Kingdoms that don't share this attribute value |
|---|---|---|---|
| Cell type | eukaryotic cell | plants, fungi, protists | bacteria, archaea |
| Cell type | does not have a cell wall | some protists (specifically, protozoa) | plants, fungi, bacteria, archaea |
| Cellularity of organism | multicellular organism | plants, fungi | protists, bacteria, archaea |
| Mode of nutrition | heterotrophic organism | some plants, some protists | most plants (including algae), fungi |
| Nature of birth | embryos pass through a blastula stage | none | all other kingdoms |
The cells of animals are called animal cells. These differ in many important respects from the cells of organisms in other kingdoms.