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Question
Identify the plant tissue in the picture given below. These contain a chemical in their walls called suberin which makes them impervious to gases and water.
Identify the plant tissue in the picture given below. These contain a chemical in their walls called suberin which makes them impervious to gases and water.
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Solution
The correct option is A Protective tissue
As plants grow older, the outer protective tissue undergoes certain changes. A strip of secondary meristem replaces the epidermis of the stem. Cells on the outside are cut off from this layer. This forms the several-layer thick cork or the bark of the tree. Cells of cork are dead and compactly arranged without intercellular spaces. They also have a chemical called suberin in their walls that makes them impervious to gases and water.
Protective tissue
As plants grow older, the outer protective tissue undergoes certain changes. A strip of secondary meristem replaces the epidermis of the stem. Cells on the outside are cut off from this layer. This forms the several-layer thick cork or the bark of the tree. Cells of cork are dead and compactly arranged without intercellular spaces. They also have a chemical called suberin in their walls that makes them impervious to gases and water.
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