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?​

Answer 1

Answer:

as it was galvanised,breeder etc

Answer 2

Answer

Explanation:The stopper is made up of heartwood which due to deposition of materials (like gum,resin,tannin,oils )becomes hard, durable and resistant to attacks of microorganisms and insects.