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Science CH 3 cls7, PLANT, :D - Coggle Diagram

- - - - Silk moths lay a lot of eggs mostly on mulberry trees.
        
        Silk worms love to eat mulberry leaves
        
        Silk worms eat 50000 times their initial weight
        
        Silk cocoons are kept on boiling steam to get the silk fibre.
        
        Silk is made of proteins which are serecine and fibrin
        
        Silk moths are called bombyx mori
      - Smell like burning hair when burnt because of protein
    - - It is obtained from the fleece of the sheep
        
        The wool is the sheep's hair and to get it we also peel a small layer of its skin. This doesn't hurt the sheep. Just like we cut our hair.
        
        Shearing the sheep is usually done in summer as because of the heat they don't need hair
      - Gestation period of sheep is 5-6 months, it lives for 12 years.
        
        Other animals which yield wool are:
        LLAMA, GOAT, ALPACA, YAK, ANGORA GOAT
  - - - They are made in factories.
- - - - Reeling: 3-10 filament is reeled together at a time to produce the desired amount of raw silk
        
        Bailing: The reeled filament is packed and it is ready for shipping or exporting to other places.
- - - - Moriculture: growing a silkworm by feeding it mulberry leaves.
        
        Scouring: Cleaning of wool in water and in machines thoroughly.
        
        Rolling: Fiber ----> Yarn
        
        Dyeing: Colouring of the fabric
        
        Reeling: taking the threads out from the silk cocoons and Throwing it
        
        Throwing: Twisting the silken threads (2 or 3) together
        
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