Short Answer TypeExplain the following methods of propagation and name the crop associated with each :
(i) bud grafting
(ii) ratoon cropping
(i) Bud grafting—It is associated with rubber crop. This method is done by the insertion of a strip of bark containing a bud from high yielding clones under a bark of a young seedling about 5 cm high till they become united in 3 to 4 weeks. The old seedling stem is then sawn off above the grafted bud, which then grows to form a new rubber plant.
(ii) Ratoon cropping—It is associated with sugarcane. It is a process by which the cane is cut close to the ground where the sugar content is concentrated. After the crop has been cut the stem begins to grow again and produces a second crop called ratoon.
(i) What are the geographical conditions necessary for the cultivation of groundnuts ?
(ii) What climatic condition adversely affects the groundnut crop ?
(iii) Name two non-edible oilseeds grown.
(i) Explain why sugar-cane must be crushed within 24 hours of harvesting.
(ii) Name four sugar milling centres in the northern plains.
Mention two reasons for the importance of the Electronic industry in India’s development.
What is a petrochemical industry ? Mention two reasons why petrochemical products are replacing traditional raw materials.
(i) Mention two characteristics of a mini steel plant.
(ii) From where does the integrated steel plant at Jamshedpur get its iron ore and coal ?
Name the following:
(i) A shipbuilding yard on the west coast of India.
(ii) A centre where diesel locomotives are manufactured.
(iii) The foreign collaborator of the iron and steel plant at Rourkela.
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