Explain how animals with common characters help to study evolution?
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Answer:
Out of all six kingdoms, the animal kingdom is most likely the one that you already know the most about. After all, we are a part of this vast group. While the characteristics of animals vary greatly, there are a few things that they all share. Animals are eukaryotic, multicellular organisms that do not have cell walls, get their nutrients by ingestion, and are capable of movement.
With so many shared qualifications, it may be hard to imagine all the possible differences between the more than 1.3 million living species of animals. Because they are made of eukaryotic cells - those with a nucleus and membrane-bound organelles - they are part of the Eukarya domain. 'Multicellular' means that they are made of many cells - not just one cell like their unicellular protozoan ancestors.