Animal husbandry and fishery - class-X

Uttar Pradesh consistently records the highest cattle population among Indian states according to livestock census data.

The North Sea is one of the most productive fishing grounds in the world due to the mixing of warm and cold currents and the presence of a shallow continental shelf.

The National Dairy Research Institute (NDRI) is a premier research institution located in Karnal, Haryana.

Gujarat is widely recognized for the success of the dairy cooperative movement, notably the Amul model, which revolutionized the dairy industry in India.

Operation Flood was a massive project launched in India to increase milk production, promote rural development, and make the country self-sufficient in milk.

The White Revolution, also known as Operation Flood, refers to the period of rapid increase in milk production in India.

Gobar (cow dung) is a traditional organic manure used in agriculture, whereas Urea, NPK, and Potash are chemical fertilizers.

India is indeed the only country producing all five commercial silks (Mulberry, Eri, Muga, Tropical Tasar, and Temperate Tasar). However, Brazil is the largest producer of sugar, not India.

Verghese Kurien is known as the father of the White Revolution in India for his instrumental role in the success of the dairy cooperative movement.

Squalis alburnoides is a hybrid fish species that exhibits a unique form of reproduction where the paternal genome is often exclusively expressed or retained in certain lineages.

Mulberry leaves are fed to silkworm larvae after which the silkworm caterpillar builds its cocoon by producing and surrounding itself with a long, continuous fibre. This procedure of cultivation of silkworms for production of raw silk is known as sericulture.

Grand Banks are one of the major fishing grounds of the world because: 

Transhumance is the seasonal movement of people with their livestock between fixed summer and winter pastures.

The Tundra biome is characterized by migratory birds like geese, jaegers, and shorebirds that arrive during the short summer season to breed.

Fishing grounds are rich where the continental shelf is wide (1) and where warm and cold currents mix (3), as this promotes plankton growth. Statement 2 is incorrect because cold waters are generally more productive than warm tropical waters. Statement 4 is incorrect as marine fisheries are more significant than inland fisheries in India.

Dynamic equilibrium refers to a state where a system remains stable because the processes of growth and decay, or input and output, are balanced. It describes a steady state in an active system.

Cattle are typically reared in areas with sufficient pasture and water, not in very low rainfall areas with scanty vegetation, which is more suitable for camels or goats. The other statements accurately describe the environmental preferences of the listed livestock.

Tropical fishing is hindered by the lack of broad continental shelves, the mixing of many species (making large-scale netting of a single species difficult), and lower levels of mechanization. Tropical fish are not inherently oily or less popular; in fact, many are highly prized.

Continental shelves are shallow, sunlit areas that support high primary productivity, making them the most productive regions for marine life and commercial fisheries.

The Sea of Japan is a major global source for herring, along with other North Pacific regions. While the North Sea is also a fishing region, the Sea of Japan is historically significant for herring production.

The Southern Ocean surrounding Antarctica is the primary habitat and historical hunting ground for blue whales due to the abundance of krill.

Tuna and Cod are significant commercial species in the Mediterranean and Southern European waters, often targeted by large-scale fishing fleets.

The Taranaki region in New Zealand is world-renowned for its dairy industry and high density of milch cows due to its favorable climate and pasture conditions.

Assam is the leading producer of Oak tasar silk in India, following the introduction of Oak flora in the region to support the silkworm species.

The Central Institute of Fisheries Nautical and Engineering Training (CIFNET) is headquartered in Kochi, Kerala.

Kandla is primarily a major commercial cargo port (Special Economic Zone) rather than a traditional fishing center, unlike the others listed which are well-known hubs for fishing fleets.

A food chain represents the flow of energy from producers to consumers. Phytoplankton (producers) are eaten by zooplankton (primary consumers), which are then eaten by fish (secondary consumers).

Energy flow in an ecosystem is often described as cyclic in terms of nutrient movement, though energy itself flows linearly. However, in the context of general ecological cycles, 'cyclic' is the standard term for the movement of matter and energy through trophic levels.

An ecological niche describes the functional role of an organism in its environment, including how it uses resources and interacts with other species, essentially the 'part' it plays in the ecosystem.

Vembanad is in Kerala (A-2), Achru is in Maharashtra (B-4), Kunda Pura is in Karnataka (C-3), and Point Calimere is in Tamil Nadu (D-1).

Biological control involves using natural predators, parasites, or pathogens to manage pest populations, such as using snakes to control rodents.

In Arctic marine ecosystems, diatoms are the primary producers. These are consumed by zooplankton, which are then eaten by fish, followed by seals, and finally the apex predator, the polar bear.

Kerala is widely recognized for having the highest fish productivity per unit area in India due to its extensive coastline and favorable backwater conditions.

India is indeed the only country producing all five commercial silks (mulberry, eri, muga, tropical tasar, and oak tasar). However, Brazil is currently the world's largest sugar producer, not India.

Animals do not have cell walls, and therefore their bodies do not contain cellulose. Cellulose is a structural component found in plant cell walls.

A group of buffalo is a herd and a group of sheep is a flock. A group of goats is typically called a tribe or trip, and a group of horses is a herd or team.

The Indian dairy sector has acquired substantial growth momentum from the Ninth Five-year plan onwards, as a result of which the country now ranks first among the world's milk producing nations. The per capita availability of the milk has reached a level of 337g per day in the year 2017, which is more than the world average of 229g per day.