General Instructions :-

  • Total duration of examination is 60 minutes. (20 minutes extra for every 60 minutes (1 hour) of the examination time for candidates with disability eligible for compensatory time).
  • Total number of questions are 100, which contains 30 questions of English, 35 questions of Reasoning & 35 questions of Quantative Aptitude.
  • The Question Palette displayed on the right side of screen will show the status of each question using one of the following symbols:
      1. Not Visited questions in White background colour.
      2. Answered questions in green colour.
      3. Unanswered questions in red colour.
      4. Marked for review questions in purple colour
  • The clock will be set at the server. The countdown timer in the top right corner of screen will display the remaining time available to you for completing the examination. When the timer reaches zero, the examination will automatically submit or end by itself. You also can end or submit your examination by clicking on submit button.
  • Marked for review status for a question simply indicates that you would like to review the question again.
  • Please note that if a question is answered and ‘marked for review’, your answer for that question will be considered in the evaluation.
  • You can click on the question palette to navigate faster across questions.

Answering a Question :-

  • Procedure for answering multiple-choice type questions:
    1. To select your answer, click on the button of one of the options.
    2. To deselect your chosen answer, click again on the button of the chosen option again or click on the Clear Response button.
    3. To change your chosen answer, click on the button of another option.
    4. To save your answer, you MUST click on the Save Next button.
  • To mark a question for review, click on the Mark for Review & Next button.
  • To change answer to a question that has already been answered, select that question from the Question Palette and then follow the procedure for answering that type of question.
  • Note that ONLY questions for which answers are either saved or marked for review after answering, will be considered for evaluation.
  • To change your answer to a question that has already been answered, first select that question for answering and then follow the procedure for answering that type of question.
  • Note that ONLY Questions for which answers are saved or marked for review after answering will be considered for evaluation.

Navigating through sections :-

  • Click on the question number in the Question Palette at the right of your screen to go to a question.
  • Note that using this option does NOT save your answer.
  • Click on Save & Next to save your answer for a question and then move to the next question.
  • If you want to keep a question marked for review, click on the button Mark for Review & Next to save your answer for the current question and then proceed to the next question.

Read the following Instruction carefully :-

  • This test comprises of multiple-choice questions.
  • Each question will have only one of the available options as the correct answer.
  • You are advised not to close the browser window before submitting the test.
  • In case, if the test does not load completely or becomes unresponsive, click on browser's refresh button to reload.

Marking Scheme :-

  • 1 marks will be awarded for each correct answer.
  • There will be 0.25 negative marking for each wrong answer.
  • No marks will be deducted for un-attempted questions

SECTION
Question No. 1-0.25+1 Marks
Direction: Read the given passage carefully and answer the following questions. Certain parts have been highlighted to help answer the questions.

Every year, around one million people die of mosquitoborne diseases according to the World Health Organization (WHO). This is why mosquitoes are considered one of the deadliest living creatures on the planet — not because they are lethal themselves, but because many of the viruses and parasites they transmit are. In the absence of an effective vaccine for dengue fever, Zika fever, chikungunya and other mosquito-borne diseases, researchers have developed genetic strategies to reduce mosquito populations. One such strategy involves the release into the wild of genetically modified (GM) mosquitoes that express a lethal gene — a strategy believed to have little impact on the overall DNA of wild populations of mosquitoes. The transfer of new genes from GM organisms to wild or domesticated non-GM populations is a key criticism of GM crops like soybean and corn. There are concerns that the introduction of GM genes into non-target species could have negative consequences for both human and environmental health. Oxitec, a company that spun out of research at Oxford University in the early 2000s, developed and trademarked GM Friendly™ mosquitoes (also known as strain OX513A of Aedes aegypti). These male GM mosquitoes have what the company describes as a “self-limiting” gene, which means that when these so-called friendly mosquitoes’ mate, their offspring inherit the self-limiting gene which is supposed to prevent them surviving into adulthood. In theory, when these mosquitoes are released in high numbers, a dramatic reduction in the mosquito population should follow. According to research published by Oxitec researchers in 2015, field trials involving recurring releases of Friendly™ mosquitoes demonstrated a reduction of nearly 95 per cent of target populations in Brazil. In these field trials, experiments were not performed to assess whether GM mosquitoes might persist in the wild. A recent study from the Powell lab at Yale University has since confirmed that some of the offspring of the GM mosquitoes didn’t succumb to the self-limiting lethal gene and survived to adulthood. They were able to breed with native mosquitoes and thereby introduce some of their genes into the wild population.
Meanwhile, the impact of mosquitoes carrying these new genes remains largely unknown. One significant worry is that a new breed of mosquito might emerge that is more difficult to control. These new genes could also potentially alter evolutionary pressures on viruses carried by mosquitoes, like dengue fever, in unpredictable ways. This includes potentially increasing their virulence or changing their host-insect interactions. These are hypothetical risks that have been raised by scientists, and reflect the need for further study.
Question: Why are mosquitoes considered as one of the deadliest living creatures on earth?









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