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प्रश्न
Describe the life history of the silk moth with the help of figures of various stages.
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उत्तर
The female silk moth lays eggs. When an egg hatches, a tiny caterpillar crawls out. This is the silkworm or larva. The silkworm feeds on mulberry leaves and grows. When it is ready to enter the next stage in its life cycle, it first weaves a net to hold itself. It then secretes a fibre made of proteins, which hardens on exposure to air. This is the silk fibre. It covers itself completely with this fibre, to form a cocoon. At this stage, the larva is called a pupa. The pupa grows and changes inside the cocoon. A few weeks later, the cocoon opens and an adult moth comes out.
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संबंधित प्रश्न
Match the words of Column I with those given in Column II:
| Column I | Column II |
| Scouring | Yields silk fibres |
| Mulberry leaves | Wool yielding animal |
| Yak | Food of silk worm |
| Cocoon | Reeling |
| Cleaning sheared skin |
The cultivation and production of silk is known as ______.
Which of the following is not a type of silk?
Reeling of silk is ______.
Some words related to silk are jumbled up. Write them in their correct form.
TURECULRISE
Some words related to silk are jumbled up. Write them in their correct form.
WILSMORK
Some words related to silk are jumbled up. Write them in their correct form.
RINGLEE
Complete the paragraph related to the life history of silk moth by filling in the blanks.
The ___(a)___ silk moth lays ___(b)___, from which hatch ___(c)___ called ___(d)___ or ___(e)___. They grow in size and when the caterpillar is ready to enter the next stage of its life history called ___(f)___, it first weaves a covering to hold itself, which is known as ___(g)___.
______ are boiled to get the silk.
Silk is the secretion of ______.
