Mix Examples- Strategies for Enhancement in Food Production Questions in English

(D) The term ‘Horn Beetle’ or ‘Rhinoceros Beetle’ typically refers to insects belonging to the subfamily $Dynastinae$ within the family $Scarabaeidae$.
Among the options provided,$Tribolium$ (flour beetle),$Corcyra$ (rice moth),and $Trogoderma$ (khapra beetle) are common stored grain pests.
None of these insects are referred to as the ‘Horn Beetle’.
Therefore,the correct option is $D$.

(D) $Apis \ dorsata$ (Rock bee) is used for honey and wax production.
$Lac \ insect$ $(Laccifer \ lacca)$ is used for the production of lac.
$Bombyx \ mori$ (Silkworm) is used for silk production.
$Lepisma$ (Silverfish) is a household pest that feeds on starchy materials like paper and book bindings,and it provides no economic benefit to humans.

(B) The correct answer is $B$.
$Eleusine \, coracana$ is the botanical name for Finger Millet,commonly known as $Ragi$.
It is a hardy crop and its grains are unique because they are free from the pericarp,making them highly nutritious.

(A) Lysine is an essential amino acid. Among the given options,wheat contains a higher content of lysine compared to others. Essential amino acids are those that cannot be synthesized by the human body and must be obtained through the diet.

(C) $Crotalaria$ $juncea$,commonly known as sunn hemp,is used as green manure.
It is a fast-growing crop that is cultivated and then ploughed back into the soil to improve its fertility.
$A$ green manure crop provides essential organic matter and nitrogen to the soil.
Additionally,it acts as a protective cover,preventing soil erosion and nutrient leaching.

(B) Melvin Calvin was awarded the Nobel Prize in Chemistry in $1961$ for his research on the carbon dioxide assimilation in plants,commonly known as the Calvin cycle.
Norman Borlaug was awarded the Nobel Peace Prize in $1970$ for his contributions to the 'Green Revolution',which involved the development of high-yielding varieties of wheat and other crops,significantly impacting global food production.

(A) The crop that originated in Tropical America (specifically Mexico) is $Maize$ ($Zea$ $mays$).
While it was domesticated in the Americas thousands of years ago,the $USA$ (particularly the Mid-west region,often called the 'Corn Belt') is currently the world's largest producer of maize.

(A) The Green Revolution refers to the rapid increase in agricultural production,particularly of food grains,through the use of high-yielding varieties of seeds,modern irrigation methods,and fertilizers.
In the context of India,it was a period that significantly boosted food plant production to ensure food security.

(C) The credit for the green revolution in India is attributed to Dr. $M$.$S$. Swaminathan.
He is widely recognized as the 'Father of the Green Revolution in India' for his pioneering work in developing high-yielding varieties of wheat and rice,which significantly increased agricultural productivity in the country.

(D) Plant breeding is the purposeful manipulation of plant species in order to create desired plant types that are better suited for cultivation,give better yields,and are disease resistant.
$1$. Improvement of quality: Breeding for better nutritional value,taste,or processing characteristics.
$2$. Development of resistance: Breeding plants to be resistant to biotic stresses (diseases,insects,and pests) and abiotic stresses (salinity,extreme temperatures,drought).
$3$. Change in duration: Developing varieties that mature earlier or fit specific cropping patterns.
Therefore,all the listed options are primary objectives of plant breeding.

(D) The earliest human civilizations developed around major river systems due to the availability of water and fertile soil.
Historical evidence indicates that crop cultivation was independently initiated in the Nile river valley in Egypt,the Chinese river valleys,and the northern plains of India.
Therefore,all these regions are historically significant for the early development of agriculture.
Thus,the correct option is $D$.

(D) The process of breeding usually takes place between members of different varieties or strains,and in certain plants of closely related species.
The resulting offspring is known as a hybrid,which often exhibits phenotypes showing characteristics that are superior to either of the parent stocks.
This phenomenon is scientifically referred to as $Hybrid \ vigour$ or $Heterosis$.

(C) Norman $E$. Borlaug was a famous plant breeder who was awarded the Nobel Peace Prize in $1970$ for his outstanding research contribution in developing high-yielding dwarf wheat varieties such as $Sonora-64$ and $Lerma Rojo-64$. These varieties played a crucial role in the Green Revolution,significantly increasing food production.

(D) Artificial breeding techniques in cattle are used to improve the genetic potential and productivity of the herd.
$1$. Artificial insemination $(AI)$ involves the collection of semen from a superior bull and its introduction into the reproductive tract of a selected cow.
$2$. Superovulation and embryo transplantation ($MOET$ - Multiple Ovulation Embryo Transfer technology) is a method used to increase the herd size by inducing the production of multiple eggs in a superior cow,fertilizing them,and transferring the embryos to surrogate mothers.
$3$. Homozygotic twinning (or cloning) is also a technique used in advanced breeding programs to produce genetically identical offspring.
Since all these methods are used in the artificial breeding of cattle,the correct answer is $D$.

(D) The correct method for increasing the productivity of super milch cows is the Multiple Ovulation Embryo Transfer $(MOET)$ technology.
$1$. Superovulation: Hormones (like $FSH$) are administered to induce the production of more than one egg (ova) per cycle.
$2$. Artificial Insemination: The cow is mated with an elite bull or artificially inseminated.
$3$. Embryo Transplantation: The fertilized eggs (embryos) at the $8-32$ cell stage are recovered non-surgically and transferred to surrogate mothers (carrier cows) to allow the genetic mother to be ready for another round of superovulation.
This combination allows for the rapid multiplication of high-yielding breeds.

(A) Beneficial insects are those that provide products or services useful to humans.
$1$. Honey bees produce honey and wax and are essential for pollination.
$2$. Lac insects produce lac,which is used in various industries.
$3$. Cochineal insects are used to produce the natural red dye carmine.
Silk worms are also beneficial,but the set in option $A$ consists entirely of insects that provide specific commercial products. Cockroaches,sand flies,and wasps are generally considered pests or harmful to humans.

(B) . $Bombyx$ $mori$ is the scientific name of the silk moth $(R)$.
$B$. $Morus$ $alba$ is the scientific name of the mulberry plant $(S)$.
$C$. Grainage is the specialized centre where disease-free silkworm eggs are produced and supplied $(Q)$.
$D$. Powdery mildew is a common fungal disease affecting the mulberry plant $(P)$.
Therefore, the correct matching is $A-R, B-S, C-Q, D-P$.

(D) The correct answer is $(d)$.
$1$. The larval stage of the moth,known as the caterpillar,possesses specialized silk glands that secrete a sticky proteinaceous fluid.
$2$. This fluid is extruded through a structure called the spinneret,which hardens upon contact with air to form a long,fine silk thread.
$3$. The caterpillar spins this thread around itself to form a cocoon.
$4$. In the commercial production of silk,the cocoons are boiled in hot water to kill the pupa inside and to soften the sericin (the glue holding the silk fibers together),allowing the silk thread to be unwound.

(C) Honey bees communicate the location of food sources to other members of the hive through specific movements known as dances.
These include the $Round \ dance$,which is used for food sources located nearby,and the $Waggle \ dance$,which is used for food sources located at a greater distance.
Therefore,both types of dances are used by honey bees for communication.

(A) The correct pair is $Apiculture – Honey bee$.
$Apiculture$ is the practice of bee-keeping for the production of honey and beeswax.
$Sericulture$ refers to the rearing of silkworms for the production of silk.
$Pisciculture$ is the breeding,rearing,and transplantation of fish.
$Aquaculture$ involves the cultivation of aquatic organisms (like fish,mollusks,crustaceans,and aquatic plants) in controlled aquatic environments.

(B) . Cod liver oil is extracted from the liver of fishes.
It is a primary source of Vitamin $A$. In some fish species,the liver oil also contains Vitamin $D$ and Vitamin $E$.

(B) Moniliasis, also known as Candidiasis, is a fungal disease in poultry caused by the yeast-like fungus $Candida \text{ } albicans$.
It primarily affects the digestive tract, specifically the crop, causing thickening of the lining and formation of white, cheesy patches.
Coccidiosis is a protozoan disease, while Coryza and Marek's disease are bacterial and viral diseases, respectively.

(B) Contact poisons are chemical substances that kill pests upon direct physical contact with their body surface.
These chemicals penetrate the cuticle or integument of the pest,leading to toxicity and death.
Unlike fumigants,which act through the respiratory system,or stomach poisons,which act after ingestion,contact poisons are effective simply by touching the pest's body.

(A) The 'Central Plantation Crops Research Institute' $(CPCRI)$ is a premier research organization under the Indian Council of Agricultural Research $(ICAR)$.
It is headquartered in Kasaragod,which is located in the state of Kerala,India.
Therefore,the correct option is $A$.

(D) pest is defined as any organism that causes damage to crops,livestock,or human health.
$1$. Mice are considered agricultural pests as they consume and destroy stored grains.
$2$. Pathogens (such as certain bacteria,fungi,or viruses) are biological pests that cause diseases in plants and animals.
$3$. Insects are the most common agricultural pests that damage crops by feeding on leaves,stems,or fruits.
Since all the listed organisms can cause significant damage,the correct answer is $D$.

(D) Fungicides are chemical compounds or biological organisms used to kill or inhibit fungi or fungal spores.
$A$. $Thiram$ is a well-known dithiocarbamate fungicide used to protect seeds and crops.
$B$. $Dichlone$ is a naphthoquinone derivative used as a fungicide.
$C$. $Capton$ (often spelled $Captan$) is a broad-spectrum phthalimide fungicide.
Since all three substances listed are used as fungicides,the correct answer is $D$.

(B) $Aldrin$ is an organochlorine insecticide that has been historically and successfully used in India for the control of locusts and grasshoppers. It acts as a potent contact and stomach poison for these insects.

(D) Carbamate herbicides are a class of chemical compounds derived from carbamic acid.
They are widely used in agriculture for weed control.
Among the given options,both thiocarbamates (e.g.,$EPTC$) and phenyl carbamates (e.g.,chlorpropham) are recognized categories of carbamate herbicides.
Therefore,the correct answer is $(d)$.

(B) Fumigants are chemical substances that exist in a gaseous state at required temperature and pressure and are used to kill pests.
$HCN$ (Hydrogen cyanide) and $CS_2$ (Carbon disulfide) are well-known volatile toxicants used as fumigants to control stored grain pests.
Therefore,both $HCN$ and $CS_2$ are classified as volatile fumigants.

(B) The correct answer is $Spodoptera$ $sp.$ (specifically $Spodoptera$ $litura$).
$Spodoptera$ $litura$,commonly known as the tobacco caterpillar,is a major polyphagous pest that causes significant damage to tobacco crops by feeding on the leaves.
$Tribolium$ $sp.$ is a pest of stored grains.
$Pectinophora$ $sp.$ (e.g.,$Pectinophora$ $gossypiella$) is the pink bollworm,a major pest of cotton.
$Calandra$ $sp.$ (also known as $Sitophilus$ $sp.$) is a weevil that infests stored grains.

(C) Green manuring involves the incorporation of green plants into the soil to improve its fertility.
It not only maintains the soil structure and organic matter content but also significantly increases the nitrogen content of the soil.
This enrichment of soil nutrients leads to an increase in crop yield by approximately $30 - 50\%$.

(D) Organic farming is a holistic agricultural system that avoids the use of synthetic chemical fertilizers and pesticides.
It relies on ecological processes and biodiversity to maintain soil fertility and crop health.
Key components include the use of organic manures (like compost and green manure),the selection of disease-resistant crop varieties,and the application of biofertilisers (such as nitrogen-fixing bacteria and mycorrhizal fungi) to enhance nutrient availability.
Therefore,all the listed options are integral parts of organic farming practices.

(B) Organic farming is a system of agriculture that avoids or largely excludes the use of synthetic inputs such as chemical fertilizers,pesticides,and growth regulators.
Green manures,crop rotation,and compost/farmyard manures are fundamental components of organic farming used to maintain soil fertility and structure.
Chemical fertilizers are synthetic substances that provide nutrients directly to plants but do not contribute to the long-term biological health of the soil,which is the primary focus of organic farming.
Therefore,chemical fertilizers are not included in organic farming practices.

(D) . All the above.
$Nicotine$, $pyrethrin$, and $cinerin$ are natural insecticides.
$Nicotine$ is obtained from the tobacco plant ($Nicotiana$ $tabacum$).
$Pyrethrin$ and $cinerin$ are obtained from the flowers of $Chrysanthemum$ $cinerarifolium$ (also known as $Tanacetum$ $cinerariifolium$).

(D) The Bordeaux mixture is considered the first fungicide to be used on a large scale.
It was developed by Pierre-Marie-Alexis Millardet in the $1880s$ in France.
It is a mixture of copper sulfate $(CuSO_4)$,lime $(Ca(OH)_2)$,and water.
It was originally used to control downy mildew on grapevines.

(A) The consumption of chemical fertilizers in India has increased significantly over the years to support the growing population and agricultural demand.
According to historical data and agricultural statistics,by the turn of the twentieth century (specifically referring to the period around the year $2000$),the annual consumption of fertilizers in India was recorded at approximately $9.2 \text{ million tonnes}$.
Therefore,option $A$ is the correct answer.

(A) The Brown Plant Hopper $(BPH)$ is a serious pest of rice crops.
Its scientific name is $Nilaparvata \ lugens$.
It causes significant damage to paddy fields by sucking the sap from the plant,which leads to the condition known as 'hopper burn'.

(B) Mulching is the process of covering the soil surface with organic or inorganic materials.
It acts as a protective layer that reduces the rate of evaporation of water from the soil surface.
By preventing direct exposure to sunlight and wind,it effectively helps in moisture conservation,which is vital for plant growth in agricultural practices.

(D) $Basmati$ is a premium variety of aromatic rice. In India, it is primarily cultivated in the Indo-Gangetic plains, which include states like $Uttar \text{ } Pradesh$, $Haryana$, and $Punjab$.

(D) The correct answer is $D$.
Sugarcane is cultivated in various states of India,including Andhra Pradesh,Karnataka,Punjab,Tamil Nadu,and Maharashtra.
However,Uttar Pradesh is the largest producer of sugarcane in India.

(B) According to global agricultural production data $(FAO)$, the three most produced cereal crops in the world are Rice, Wheat, and Maize.
Specifically, Rice $(Oryza \, sativa)$ is the most produced crop, followed by Wheat $(Triticum \, aestivum)$, and then Maize $(Zea \, mays)$.
Therefore, the correct order of total production is Rice > Wheat > Maize.

(C) The correct answer is $(c)$.
Liquid wax is a type of ester that remains liquid at room temperature.
$1$. Sperm whale oil,known as $Spermaceti$,is a natural source of liquid wax.
$2$. The seeds of the Jojoba plant $(Simmondsia \, chinensis)$ contain approximately $50\%$ liquid wax,which is chemically very similar to $Spermaceti$.
Both of these sources have been historically used in the production of cosmetics and high-performance lubricants.

(D) $Leucaena \ leucocephala$ is a leguminous plant belonging to the family $Fabaceae$.
It is widely known by its common name,$Subabul$.
It is often used in agroforestry and as fodder for livestock.

(A) Potato,tomato,and chili were introduced to India by the Portuguese from the New World (South America). Before their arrival,these vegetables were not cultivated in India. Therefore,the correct answer is $A$.

(D) Monoculture refers to the agricultural practice of growing a single crop species over a large area year after year.
This practice significantly reduces biodiversity in the agricultural ecosystem.
Because the entire field consists of genetically similar plants,it provides a uniform and abundant food source for specific pests and pathogens.
Consequently,monoculture crops are much more susceptible to widespread pest infestations and diseases compared to polyculture systems.

(A) According to the economic data often cited in the context of Indian agriculture,approximately $62\%$ of the population is engaged in the agricultural sector for their livelihood. This sector remains the primary source of employment for a significant portion of the Indian workforce.

(B) The plant $Simmondsia$ $chinensis$,commonly known as Jojoba,produces seeds that contain a liquid wax (Jojoba oil). This liquid wax is chemically very similar to the oil obtained from the sperm whale. It is widely used in the cosmetics and lubricant industries as a sustainable alternative to animal-derived oils.

(C) The phenomenon where the offspring of two genetically distinct,pure-breeding parents exhibit superior traits such as increased growth,fertility,and yield compared to their parents is known as $Hybrid \ vigor$ or $Heterosis$. This occurs because the cross-breeding masks deleterious recessive alleles and promotes heterozygosity,which often leads to better physiological performance.

(D) Bananas are considered one of the most affordable fruits that provide a high amount of energy. They are rich in carbohydrates,specifically glucose,fructose,and sucrose,along with fiber,which provides an immediate and sustained energy boost. Compared to other fruits like apples or mangoes,bananas are generally more cost-effective and available year-round,making them a primary source of quick energy.

(A) The three major cereal crops that provide the majority of the world's food supply are wheat,rice,and maize. These crops are staple foods for a large portion of the global population and are cultivated extensively worldwide.