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Animal cells have a cell membrane instead of a cell wall, making tissue flaccid. This means that it is soft, pliable and not as heavy as plant tissue. This is part of what enables animals to move. Plants have no skeleton or exoskeleton, and are held up by their tissue. The plant tissue is made up of cells with rigid cell walls. Animal cells anchor onto a skeleton, and have a flaccid cell membrane.
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The simple answer would be this: they don't need one. In the brutally competitive business of survival, expensive and unneeded things get dropped quickly.
More Information:
The cell wall structure provides a lot of support and stabilizes the overall structure of the plant. Cells can't move around. In animals, multiple interactions between cells and molecules around them (referred to as the extracellular matrix) help to hold everything in place but animals have no real equivalent to the, relatively rigid, cell wall.
The plant cell wall is important for resisting the fluid pressure that builds up in the plant cells, which is part of the mechanism by which they can stand upright. Animals need bones or an exoskeleton to achieve a similar result.
There are a couple of consequences of having a cell wall, and one of them is a decrease in mobility of the individual organism - animals move around much more than plants. This in turn affects the different ways that plants and animals respond to environmental changes.
Because the cell wall tends to limit the direction of cell growth, plant embryos tend to develop by having specialized groups of cells that divide, whereas animal embryos tend to grow in all directions and in all places at once.
Thus, genetically, animals appear to have traded the structural stability of the cell wall for the greater flexibility and increased mobility of the cell membrane. However, there are still many similarities between plant and animal cells.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoA plant is helpless because it can not move, so it needs a cell wall to make it solid and sturdy, for its protection. Its cell wall allows it to be rigid and upright, because it does not have muscles and bones to keep it upright.
But because an animal can move about and survive, it does not need cell walls on its cells for protection. An animal has bones and muscles to keep it upright, so it therefore does not need a hard and rigid outer layer, which would make moving very inconvenient.
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Is a cell wall a animal?
no,it doesnt
What does a plant cell have that a animal cell doesnt?
chloroplast and cell wall and a LARGE vacoule
What does a animal cell have that a plant cell doesnt?
chloroplast and cell wall and a LARGE vacoule
Which cell does not have cell membrane?
the animal and plant cell both have a cell membrane...you are the thinking of the cell wall. The cell wall and chloroplast is only found in the plant cell. Chloroplast helps with photosynthesis and the cell wall gives the plant cell, its shape. Since the animal doesnt have a cell wall, it is round while the plant cell is a sqaure or rectangle. hope this helps
What does a plant cell have that a anim al cell doesnt have?
An animal cell has lysosomes and centrioles where a plant cell doesn't. also a plant cell has a cell wall and chloroplast.
Where is the cell wall located in an animal?
There is no cell wall in a animal cell but there is a cell wall in the plant cell.
What does a plant cell wall and animal cell wall have in common?
An animal cell does not have a cell wall.
What structures are found in a plant cells that are not found in animal cell?
chlorophyll
What dos the cell wall do for the animal cell?
An animal cell has a cell membrane, not a cell wall.
What does not have a cell wall?
The animal cell doesn't have a cell wall, while the plant cell does.
What the animal cell wall does?
The animal does not have a cell wall, only a plant cell has one.
Does an animal cell have a cell wall and a cell membrane?
An animal cell consists of a cell membrane but not a cell wall.
