The organisms in the Animalia kingdom are characterized by having cells that lack a cell wall, unlike plants and bacteria. Plant cells have a rigid cell wall, while bacterial cells have a cell wall made of peptidoglycan. Thus, the answer to the question is animals. ;
All organisms in the Animalia kingdom have cells that lack a cell wall, unlike plants and bacteria. In contrast, plants have a rigid cell wall made of cellulose, and bacteria possess a cell wall made of peptidoglycan. Therefore, the correct answer is animals.
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