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The structures of plants cells and animal cells though similar have a few differences. Three organelles that are present in plant cells but not present in animal cells are:
- The cell wall: Animals cells do not have a cell wall unlike plant cells. The cell wall of plants is made of cellulose and in many plants has an additional polymer called lignin which provides hardens it further. The cell wall is a protective layer around the cell, it allows materials to pass through it but eliminates the requirement of a skeletal system that animals do.
- Leucoplasts: These are organelles with a double membrane that store starch and other nutrients in plants. They are not present in animal cells.
- Chromoplasts: Plants are able to produce carbohydrates using carbon dioxide, water and energy in the form of sunlight using chlorophyll that is found in organelles called chromoplasts. Animal cells do not have chromoplasts which does not allow photosynthesis in animals.
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