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Why is the cell wall absent in animal cells?

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Therefore we can ask the question, why are there types of living things (whether classed as animal or otherwise) that don't have cell walls if their ancestors did, i.e. why is the absence of a cell wall a derived trait of some clades? read more

In animals, cell wall is not present as a result the outer layer of skin is thicker than plants(epidermal layer). Therefore Animals can survive such extreme condition. Also animals have certain mechanism such development of Osteocyte cells which helps the animals to exist without Cell wall. read more

Animals have only cell membranes made up of phospholipid bilayer and protein which protects and hold together the cell and its parts, it does not need to provide the support that plant cell was provide because animals have other forms of support ( i.e. exoskeletons and endoskeletons) and the lack of the cell wall allows for increased flexibility and advanced cell/tissue specialization, which plants cannot achieve. read more

Communication between cells occurs easily without the presence of a cell wall, keeping the organism regulated and allowing molecules to pass quickly between cells through diffusion. Animal cells do not need the protection of walls because specialized skin cells protect the rest of the cells. read more

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