10. •Cotton is the most important fibre
crop grown in India.
•It grows best in warm areas with
fertile soil and moderate rainfall.
•Black soil and alluvial soil is good for
crop cultivation.
•Cotton is obtained from the cotton
boll. It contain soft, white, fluffy
cotton fibres.
18. •It grows best in warm and humid
climates.
•Alluvial soil is preferred.
•It is one of the cheapest natural
fibres and is used to make coarse
strong threads and strong packaging
material such as gunny bags and
ropes.
19. •The jute plant is harvested at the flowering
stage. The plants are cut at the bottom of stems
and tied into bundles. The bundles are
immersed in water for few days. This process is
called Retting.
•The stems rot, leaving the fibres behind. The
fibres are then separated and cleaned.
•India is the largest jute producer.
• Jute fibres are also woven into clothes,
curtains, chair coverings and carpets,.
https://www.youtube.com/watch?v=c8RwcE4917Y
21. •Wool is obtained from hair of animals like the
sheep, camel and goat.
•The process of removing the wool from sheep
is called shearing
•After shearing, the wool is cleaned and spun
into fibre.
•The fibre is then woven or knitted to make
woollen clothes.
•Wool retains air between the fibres. That is
why it is fluffy. This enables it to retain body
heat. Woollen clothes are, therefore, good for
wearing in cold weather.
24. •Silk was first developed in
China.
•It is obtained from the
cocoon that the silkworm
spins around itself.
•The rearing of silkworms for
production of silk is called
Sericulture.
