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प्रश्न
Answer the following question.
Student found a wooden stopper in lab. He was told by an old lab attendant that it is there for many years. He kept thinking how it did not rot?
टिप्पणी लिखिए
उत्तर
- The wooden stopper or cork is obtained from the phellem (cork) part of a bark.
- Phellem (cork) is impervious in nature and does not allow entry of water due to suberized walls.
- Due to this it does not rot and remains as it is for many years.
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