A mulch is a layer of material applied to the surface of an area of soil. Its purpose is to conserve moisture and to improve the fertility and health of the soil. A mulch is usually but not exclusively organic in nature. This is not a FYM.

These are matched correctly. 

This is the correct option because mussels are farmed in sea water. Composite fish farming includes grass carp, which feeds on weeds. These species can co-exist in a single pond with the others, and thus, increase the yield of fish from the pond. This is the correct option because mussels are farmed in sea water.

Beekeeping is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper keeps bees in order to collect their honey and other products that the hive produces, to pollinate crops or to produce bees for sale to other beekeepers. A location where bees are kept is called an apiary or bee yard.

Oats, berseem and sudan grass are some crops that are raised as food for the livestock.

Aseel is a very popular poultry breed. It has a high meat yield but is a poor egg layer. Peela, Yakub, Nurie and Kajal are some of the desi aseel breeds.

This is the correct option. Plants get some nutrients like nitrogen, chlorine and phosphorus from the soil.

Dropsy is not a common infectious disease of cattle. It is a common disease common in fishes.

This is the correct option. Crop protection management, crop variety management and crop production management are the factors that can increase yield.

This is the correct option. A number of elements are known to be needed in small amounts for proper plant growth and development. Nutrient deficiencies in these areas can adversely affect plant growth and development. All these are adversely affected by deficiency in nutrients.

This is correct. White revolution contributed to increased availability of milk. Blue revolution led to increased fish production and yellow revolution contributed to increased oil production.

Draught breeds are bullock breeds that are strong and sturdy. Dairy breed cows are high milk yielders but the bullocks are poor for draught purposes. Dual purpose breed cows are high milk yielders and bullocks are strong and sturdy. Thus, this is the correct option.

Daula or ophiocephalaus striatus is a fresh water food fish.

Hybrid is an animal or plant resulting from a cross between genetically unlike individuals. Hybrids between different species are usually sterile. They can be of different varieties, different genera or different species of the same genus.

Paddy crop fields are also used for fish culture.

This is the correct match. Aseel varieties of poultry have high meat yield. White leghorn is a good egg layer. Rhode island red is a dual variety breed of poultry.

Before sowing seeds, plants like the sunhemp are grown and ploughed into the soil. These green plants enrich the soil with nitrogen and phosphorous. This is called green manure.

This is the correct option. Both Red Sindhi and Sahiwal are chosen for excellent resistance to diseases.

It is the fish that can feed on the weeds.

Crap culture is also called composite culture. Sewage fed fish culture is very popular and so is fish culture in bundhs. Integrated fish culture is also a part of the different fish cultures in practice. Thus, this answer is correct.

Microbes are not needed in manufacturing fertilizers is a correct statement. Groundnut and sunflower are a prominent mixed cropping pair is also a correct statement. Thus, this answer is the correct choice.

All are correctly matched. Capture fishing is fish obtained from natural resources. The practice of culture of finned fishes in marine water is mariculture. The practice of culture of aquatic food in reservoirs, lagoons, etc. is aquaculture.

All the given reasons are valid for damage or destruction of crops. The abiotic factors such as drought or water logging can cause extensive damages. Also, biotic factors such as nematodes and diseases can cause harm to the standing crop.

Berseem (Trifolium alexandrinum) is an annual leguminous fodder crop. It is one of the most suitable fodder crop for areas below 1700 m altitude with irrigation facilities. It remains soft and succulent at all stages of growth. It can be grown without irrigation in areas with high water table and under water-logged conditions.

Mustard plant are any of several plant species in the genera Brassica and Sinapis. Mustard seed is used as a spice, it is not a cereal crop.

Lentil is an edible pulse. It is a bushy annual plant of the legume family, grown for its lens-shaped seeds.

This is a macro nutrient.

Higher yield and desirable agronomic characteristics are two correct reasons from the given options for variety improvement.

Both neem leaves and turmeric are used as bio-pesticides.

All of these are kharif crops.