Answers

2015-09-25T12:13:47+05:30
Both have dermal tissue which is made of three layers-epidermis, mesodermis, endodermis.In the stem of young tree the outermost layer is epidermis whereas in stem of older tree or tree the outermost layer has one coating named bark which is made of suberin chemical.this chemical makes the bark impervious of moisture and poisonous air . Hopes this help u .
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