Q. 4 D5.0( 1 Vote )
Give short answers:
What is retting?
Answer :
Retting is the process that involves the action of the microorganisms and moisture on plants to dissolve or rot away the cellular tissues so that it facilitates the separation of the fibre from the stem. This is mostly used in the jute to separate the fibres from the woody tissues.
The traditional methods of retting involve the soaking of the stem in water and dew and exposing the stem to moisture for 14 to 28 days. This will allow the stem to soften by the action of the microorganisms and the moisture content and helps the extraction of the fibre from the barks. But it is a labour intensive method involving long duration and requiring large quantities of fresh water. The developments in technology have led to the introduction of many modern means of separating the fibre through heat, chemicals, and enzymatic treatments.
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DISCUSSION
Plan a daily menu for a South Indian and a North Indian. Why is it different?
MAP SKILL
Mark areas producing wheat, cotton and jute on a world map.
Tamilnadu - Social Science Term-2Give short answers:
What are the requirements for the cultivation of wheat?
Tamilnadu - Social Science Term-2Match the following:
Fill in the blanks.
The world’s best _______________ comes from the temperate grasslands.
Tamilnadu - Social Science Term-2Choose the correct answer:
India and Bangladesh are the leading producers of ________________.
Tamilnadu - Social Science Term-2Choose the correct answer:
Cotton grows well in ___________ soil.
A) Black
B) Alluvial
C) Desert
Tamilnadu - Social Science Term-2Choose the correct answer:
Tea is a ___________ shrub.
Tamilnadu - Social Science Term-2Choose the correct answer:
In India, U.P, Punjab, and Haryana are the major __________ producing states.
Tamilnadu - Social Science Term-2Give short answers:
What is ginning?
Tamilnadu - Social Science Term-2