I. Relay cropping involves planting another crop in the same field without harvesting the first.
II. It helps in avoiding the competition between main crop and the other crops.
III. Relay cropping improves soil fertility.

I. Tropical fish are oily, and so less popular as food.
II. Continental shelves are almost absent.
III. The different species are usually mixed and shoals of same species are rare.
IV. The tropical fishing industry is less mechanised.
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I. Nomads are primarily dependent upon animals rather than crops for survival.
II. The selection of animals is made according to the demands of the market.
III. Nomadic herding is subsistence form of agriculture.

I. Sowing of wheat is possible without burning the residue of previous crop.
II. Without the need for nursery of rice saplings, direct planting of paddy seeds in the wet soil is possible.
III. Carbon sequestration in the soil is possible.
Select the correct answer using the codes given below.

I. Cod is a pelagic fish.
II. Toba in Ise Bay, Japan is renowned for its pearl industry.
III. Stavanger, Norway specialises in canning of a fish-brisling.
IV. Norway’s fishing industry shifts to Lotofen Island from Bergen in autumn.
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I. Controlling the alkalinity of irrigation water is possible.
II. Efficient application of Rock Phosphate and all other phosphatic fertilisers is possible.
III. Increased availability of nutrients to plants is possible.
IV. Reduction in the leaching of chemical nutrients is possible.
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I. Long continental shelves.
II. Meeting of warm and cold ocean currents.
III. Little availability of agricultural land.
IV. Indented coastline.
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I. Two types of wheat are grown under commercial grain farming.
II. The produce is used for export purposes.
III. It requires higher investments in machinery.
Which of the above statement/s is/are true?

I. Plantations were introduced by colonialists in their colonies.
II. Plantation farming is practised on large estates.
III. It requires a good transport system.

I. Viticulture is practised in Mediterranean region.
II. Viticulture is practised on the Persian shores of Caspian sea.

I. Crops change in each subsequent year under crop rotation.
II. Complementary crops are grown under crop rotation.
III. Crop rotation increases the risk of crop failure for the farmers.

I. Agriculture is the most widely adopted occupation of the world.
II. In developing countries, agriculture is a major contributor to GDP and employment.
III. Agriculture developed only during medieval times.

I. The Mediterranean agriculture is highly specialised commercial agriculture.
II. It is intensive subsistence agriculture dominated by wet paddy cultivation.
III. It is a primitive subsistence agriculture.
IV. Viticulture is a speciality of the Mediterranean region.
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