Examlex
____________________ is/are an essential component of all body tissues.
Excavates
A group of protists characterized by their unique cellular structures, including a notable feeding groove "excavated" from one side.
Closest Relatives
Organisms that are most closely related to each other through shared ancestry in the tree of life.
Animals
Multicellular, eukaryotic organisms of the kingdom Animalia or Metazoa, characterized by their ability to move voluntarily, consume organic material, breathe oxygen, and reproduce sexually.
Choanoflagellates
Aquatic microorganisms thought to be the closest living relatives of animals, characterized by their flagellum and collar structure.
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