The outermost rigid and non-living covering of a plant cell is known as ____________.

tonoplast

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cell wall

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chromoplast

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plasma membrane

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Solution

The correct option is B cell wall
In addition to the plasma membrane (cell membrane), plants have an additional protective layer called the cell wall. The cell wall is a non-living, rigid membrane that is made up of cellulose in plants. It provides mechanical strength and support to the plant cell. Whereas tonoplast is the membrane surrounding the vacuole, and chromoplast is a type of plastid.

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