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Cell Structure and Micro-organisms — Science STD 7 — Question

Maharashtra BoardEnglish MediumSTD 7ScienceCell Structure and Micro-organisms2 Marks
Question
What is the powdery material found on old currency notes or old rubber or paper?
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Answer

  1. The powdery material is the spores of fungi.
  2. All the materials like gunny bags, cotton clothes, paper, rubber, etc. are plant products and leather is an animal product.
  3. In a humid atmosphere, fungi and some other micro-organisms grow on these articles and spoil or damage them.

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