Answer:
Cell is a basic unit of life as no living organism can have life without being cellular because cell is a unit of both its structure and function. A number of organisms are made of single cell. They are called unicellular or acellular, e.g., Amoeba, Chlamydomonas, Acetabuhria, bacteria, yeast. Here a single cell is (i) capable of independent existence and (ii) able to perform all the essential functions of life. In multicellular organisms, cells are building blocks of the body or basic units of body structure. The body of an organism is made up of organ systems, which in turn are made up of organs, organs are made up of tissues and tissues are made up of cells. Thus, we can say that cells are basic structural units of living organisms.
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