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प्रश्न
HOTS
Silk fiber is used to manufacture parachute. Why?
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उत्तर
- Silk is the strongest natural fibre.
- It is thin light in weight, strong.
- It is easly to peak and unfold.
- It is also fire resistant.
- It is dries quickly.
- It is also resistant to abrasion and chemicals.
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संबंधित प्रश्न
The silkworm is (a) a caterpillar, (b) a larva. Choose the correct option
Make sketches of the two stages in the life history of the silk moth which are directly related to the production of silk.
Out of the following, which are the two terms related to silk production?
Sericulture, floriculture, moriculture, apiculture and silviculture
Hints:
(1) Silk production involves cultivation of mulberry leaves and rearing silkworms.
(2) Scientific name of mulberry is Morus alba.
A natural fibre obtained by boiling cocoons is called ______.
The cultivation and production of silk is known as ______.
Define – Sericulture
Who invented the Ahimsa silk?
The general process that takes place at a sheep shearing shed is ______.
Reeling of silk is ______.
State whether the following statement is True or False. If false, correct them.
Silkworms are caterpillars of silk moth.
State whether the following statement is True or False. If false, correct them.
The rearing of silkworms for obtaining silk is called silviculture.
Some words related to silk are jumbled up. Write them in their correct form.
BELMURRY
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)___.
India stands ______ in silk production in the world.
The silk moth feed on ______.
The larva of a silkworm is called ______.
List a few characteristic features of silk.
