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Pheromone Application Technology, often in the news, was recently used by cotton farmers in Telangana to tackle the deadly pink bollworm. In this context, pheromones are best described as
  • a)
    Pesticides used to tackle a particular type of pests produced from the discharges of the same pests.
  • b)
    Hormones present in plants that ooze out to serve as a defence mechanism when the stems are slightly cut.
  • c)
    Chemicals which can act like hormones and have an impact on the behaviour of a targeted organism.
  • d)
    Powdered form of insecticides which not only kill insects, but also help increase agricultural yield.
Correct answer is option 'C'. Can you explain this answer?
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Pheromone Application Technology, often in the news, was recently used...
Pheromones are chemical signals that carries information between individual within species.It is a type of chemical signal that helps to warn predators to find food to attract mate etc.Large amount of pheromones are used in agriculture to disrupt insect mating.
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Passage IIChemical pesticides lose their role in sustainable agriculture if the pests evolve resistance. The evolution of the pesticide resistance is simply natural selection in action. It is almost certain to occur when vast numbers of a genetically variable population are killed. One or a few individuals may be unusually resistant (perhaps because they possess an enzyme that can detoxify the pesticid e). If the pesticide is applied repeatedly, each successive generation of the pest will contain a larger proportion of resistant individuals. Pests typically have a high intrinsic rate of reproduction, and so a few individuals in one generation may give rise to hundreds or thousands in the next, and resistance spreads very rapidly in a population.This problem was often ignored in the past, even though the first case of DDT (dichlorodiphenyltrichloroethane) resistance was reported as early as 1946. There is an exponential increase in the numbers of invertebrates that have evolved resistance and in the number pesticides against which resistance has evolved. Resistance has been recorded in every family of arthropod pests (including dipterans such as mosquitoes and house flies, as well as beetles, moths, wasps, fleas, lice and mites) as well as in weeds and plant pathogens. Take the Alabama leaf worm, a moth pest of cotton, as an example. It has developed resistance in one or more regions of the world to aldrin, DDT, dieldrin, endrin, lindane and toxaphene.If chemical pesticides brought nothing but problems, - if their use was intrinsically and acutely unsustainable then they would already have fallen out of widespread use. This has not happened. Instead, their rate of production has increased rapidly. The ratio of cost to benefit for the individual agricultural producer has remained in favour of pesticide use. In the USA, insecticides have been estimated to benefit the agricultural products to the tune of around $5 for every $1 spent.Moreover, in many poorer countries, the prospect of imminent mass starvation, or of an epidemic disease, are so frightening that the social and health costs of using pesticides have to be ignored. In general the use of pesticides is justified by objective measures such as lives saved, economic efficiency of food production and total food produced. In these very fundamental senses, their use may be described as sustainable. In practice, sustainability depends on continually developing new pesticides that keep at least one step ahead of the pests pesticides that are less persistent, biodegradable and more accurately targeted at the pests.Q. How do pesticides act as agents for the selection of resistant individuals in any pest population?1. It is possible that in a pest population the individuals will behave differently due to their genetic makeup.2. Pests do possess the ability to detoxify the pesticides.3. Evolution of pesticide resistance is equally distributed in pest population. Which of the statements given above is/are correct?

Passage IIChemical pesticides lose their role in sustainable agriculture if the pests evolve resistance. The evolution of the pesticide resistance is simply natural selection in action. It is almost certain to occur when vast numbers of a genetically variable population are killed. One or a few individuals may be unusually resistant (perhaps because they possess an enzyme that can detoxify the pesticid e). If the pesticide is applied repeatedly, each successive generation of the pest will contain a larger proportion of resistant individuals. Pests typically have a high intrinsic rate of reproduction, and so a few individuals in one generation may give rise to hundreds or thousands in the next, and resistance spreads very rapidly in a population.This problem was often ignored in the past, even though the first case of DDT (dichlorodiphenyltrichloroethane) resistance was reported as early as 1946. There is an exponential increase in the numbers of invertebrates that have evolved resistance and in the number pesticides against which resistance has evolved. Resistance has been recorded in every family of arthropod pests (including dipterans such as mosquitoes and house flies, as well as beetles, moths, wasps, fleas, lice and mites) as well as in weeds and plant pathogens. Take the Alabama leaf worm, a moth pest of cotton, as an example. It has developed resistance in one or more regions of the world to aldrin, DDT, dieldrin, endrin, lindane and toxaphene.If chemical pesticides brought nothing but problems, - if their use was intrinsically and acutely unsustainable – then they would already have fallen out of widespread use. This has not happened. Instead, their rate of production has increased rapidly. The ratio of cost to benefit for the individual agricultural producer has remained in favour of pesticide use. In the USA, insecticides have been estimated to benefit the agricultural products to the tune of around $5 for every $1 spent.Moreover, in many poorer countries, the prospect of imminent mass starvation, or of an epidemic disease, are so frightening that the social and health costs of using pesticides have to be ignored. In general the use of pesticides is justified by objective measures such as lives saved, economic efficiency of food production and total food produced. In these very fundamental senses, their use may be described as sustainable. In practice, sustainability depends on continually developing new pesticides that keep at least one step ahead of the pests – pesticides that are less persistent, biodegradable and more accurately targeted at the pests.Q. “The evolution of pesticide resistance is natural selection in action.” What does it actually imply?

Passage IIChemical pesticides lose their role in sustainable agriculture if the pests evolve resistance. The evolution of the pesticide resistance is simply natural selection in action. It is almost certain to occur when vast numbers of a genetically variable population are killed. One or a few individuals may be unusually resistant (perhaps because they possess an enzyme that can detoxify the pesticid e). If the pesticide is applied repeatedly, each successive generation of the pest will contain a larger proportion of resistant individuals. Pests typically have a high intrinsic rate of reproduction, and so a few individuals in one generation may give rise to hundreds or thousands in the next, and resistance spreads very rapidly in a population.This problem was often ignored in the past, even though the first case of DDT (dichlorodiphenyltrichloroethane) resistance was reported as early as 1946. There is an exponential increase in the numbers of invertebrates that have evolved resistance and in the number pesticides against which resistance has evolved. Resistance has been recorded in every family of arthropod pests (including dipterans such as mosquitoes and house flies, as well as beetles, moths, wasps, fleas, lice and mites) as well as in weeds and plant pathogens. Take the Alabama leaf worm, a moth pest of cotton, as an example. It has developed resistance in one or more regions of the world to aldrin, DDT, dieldrin, endrin, lindane and toxaphene.If chemical pesticides brought nothing but problems, - if their use was intrinsically and acutely unsustainable then they would already have fallen out of widespread use. This has not happened. Instead, their rate of production has increased rapidly. The ratio of cost to benefit for the individual agricultural producer has remained in favour of pesticide use. In the USA, insecticides have been estimated to benefit the agricultural products to the tune of around $5 for every $1 spent.Moreover, in many poorer countries, the prospect of imminent mass starvation, or of an epidemic disease, are so frightening that the social and health costs of using pesticides have to be ignored. In general the use of pesticides is justified by objective measures such as lives saved, economic efficiency of food production and total food produced. In these very fundamental senses, their use may be described as sustainable. In practice, sustainability depends on continually developing new pesticides that keep at least one step ahead of the pests pesticides that are less persistent, biodegradable and more accurately targeted at the pests.Q. What does the passage imply?

Passage IIChemical pesticides lose their role in sustainable agriculture if the pests evolve resistance. The evolution of the pesticide resistance is simply natural selection in action. It is almost certain to occur when vast numbers of a genetically variable population are killed. One or a few individuals may be unusually resistant (perhaps because they possess an enzyme that can detoxify the pesticid e). If the pesticide is applied repeatedly, each successive generation of the pest will contain a larger proportion of resistant individuals. Pests typically have a high intrinsic rate of reproduction, and so a few individuals in one generation may give rise to hundreds or thousands in the next, and resistance spreads very rapidly in a population.This problem was often ignored in the past, even though the first case of DDT (dichlorodiphenyltrichloroethane) resistance was reported as early as 1946. There is an exponential increase in the numbers of invertebrates that have evolved resistance and in the number pesticides against which resistance has evolved. Resistance has been recorded in every family of arthropod pests (including dipterans such as mosquitoes and house flies, as well as beetles, moths, wasps, fleas, lice and mites) as well as in weeds and plant pathogens. Take the Alabama leaf worm, a moth pest of cotton, as an example. It has developed resistance in one or more regions of the world to aldrin, DDT, dieldrin, endrin, lindane and toxaphene.If chemical pesticides brought nothing but problems, - if their use was intrinsically and acutely unsustainable then they would already have fallen out of widespread use. This has not happened. Instead, their rate of production has increased rapidly. The ratio of cost to benefit for the individual agricultural producer has remained in favour of pesticide use. In the USA, insecticides have been estimated to benefit the agricultural products to the tune of around $5 for every $1 spent.Moreover, in many poorer countries, the prospect of imminent mass starvation, or of an epidemic disease, are so frightening that the social and health costs of using pesticides have to be ignored. In general the use of pesticides is justified by objective measures such as lives saved, economic efficiency of food production and total food produced. In these very fundamental senses, their use may be described as sustainable. In practice, sustainability depends on continually developing new pesticides that keep at least one step ahead of the pests pesticides that are less persistent, biodegradable and more accurately targeted at the pests.Q. With reference to the passage, consider the following statements:1. Use of chemical pesticides has become imperative in all the poor countries of the world.2. Chemical pesticides should not have any role in sustainable agriculture3. One pest can develop resistance to many pesticidesWhich of the statements given above is/are correct?

Passage IIChemical pesticides lose their role in sustainable agriculture if the pests evolve resistance. The evolution of the pesticide resistance is simply natural selection in action. It is almost certain to occur when vast numbers of a genetically variable population are killed. One or a few individuals may be unusually resistant (perhaps because they possess an enzyme that can detoxify the pesticid e). If the pesticide is applied repeatedly, each successive generation of the pest will contain a larger proportion of resistant individuals. Pests typically have a high intrinsic rate of reproduction, and so a few individuals in one generation may give rise to hundreds or thousands in the next, and resistance spreads very rapidly in a population.This problem was often ignored in the past, even though the first case of DDT (dichlorodiphenyltrichloroethane) resistance was reported as early as 1946. There is an exponential increase in the numbers of invertebrates that have evolved resistance and in the number pesticides against which resistance has evolved. Resistance has been recorded in every family of arthropod pests (including dipterans such as mosquitoes and house flies, as well as beetles, moths, wasps, fleas, lice and mites) as well as in weeds and plant pathogens. Take the Alabama leaf worm, a moth pest of cotton, as an example. It has developed resistance in one or more regions of the world to aldrin, DDT, dieldrin, endrin, lindane and toxaphene.If chemical pesticides brought nothing but problems, - if their use was intrinsically and acutely unsustainable then they would already have fallen out of widespread use. This has not happened. Instead, their rate of production has increased rapidly. The ratio of cost to benefit for the individual agricultural producer has remained in favour of pesticide use. In the USA, insecticides have been estimated to benefit the agricultural products to the tune of around $5 for every $1 spent.Moreover, in many poorer countries, the prospect of imminent mass starvation, or of an epidemic disease, are so frightening that the social and health costs of using pesticides have to be ignored. In general the use of pesticides is justified by objective measures such as lives saved, economic efficiency of food production and total food produced. In these very fundamental senses, their use may be described as sustainable. In practice, sustainability depends on continually developing new pesticides that keep at least one step ahead of the pests pesticides that are less persistent, biodegradable and more accurately targeted at the pests.Q. Why is the use of chemical pesticides generally justified by giving the examples of poor and developing countries?1. Developed countries can afford to do away with use of pesticides by adapting to organic farming, but it is imperative for poor and developing countries to use chemical pesticides.2. In poor and developing countries, the pesticide addresses the problem of epidemic diseases of crops and eases the food problem.3. The social and health costs of pesticide use are generally ignored in poor and developing countries. Which of the statements given above is/are correct?

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Pheromone Application Technology, often in the news, was recently used by cotton farmers in Telangana to tackle the deadly pink bollworm. In this context, pheromones are best described asa)Pesticides used to tackle a particular type of pests produced from the discharges of the same pests.b)Hormones present in plants that ooze out to serve as a defence mechanism when the stems are slightly cut.c)Chemicals which can act like hormones and have an impact on the behaviour of a targeted organism.d)Powdered form of insecticides which not only kill insects, but also help increase agricultural yield.Correct answer is option 'C'. Can you explain this answer?
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Pheromone Application Technology, often in the news, was recently used by cotton farmers in Telangana to tackle the deadly pink bollworm. In this context, pheromones are best described asa)Pesticides used to tackle a particular type of pests produced from the discharges of the same pests.b)Hormones present in plants that ooze out to serve as a defence mechanism when the stems are slightly cut.c)Chemicals which can act like hormones and have an impact on the behaviour of a targeted organism.d)Powdered form of insecticides which not only kill insects, but also help increase agricultural yield.Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Pheromone Application Technology, often in the news, was recently used by cotton farmers in Telangana to tackle the deadly pink bollworm. In this context, pheromones are best described asa)Pesticides used to tackle a particular type of pests produced from the discharges of the same pests.b)Hormones present in plants that ooze out to serve as a defence mechanism when the stems are slightly cut.c)Chemicals which can act like hormones and have an impact on the behaviour of a targeted organism.d)Powdered form of insecticides which not only kill insects, but also help increase agricultural yield.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Pheromone Application Technology, often in the news, was recently used by cotton farmers in Telangana to tackle the deadly pink bollworm. In this context, pheromones are best described asa)Pesticides used to tackle a particular type of pests produced from the discharges of the same pests.b)Hormones present in plants that ooze out to serve as a defence mechanism when the stems are slightly cut.c)Chemicals which can act like hormones and have an impact on the behaviour of a targeted organism.d)Powdered form of insecticides which not only kill insects, but also help increase agricultural yield.Correct answer is option 'C'. Can you explain this answer?.
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