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Class 1 Exam  >  Class 1 Questions  >  Choose the word which is different from the r... Start Learning for Free
Choose the word which is different from the rest.
  • a)
    Housefly
  • b)
    Spider
  • c)
    Mosquito
  • d)
    Butterfly
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Choose the word which is different from the rest.a)Houseflyb)Spiderc)M...
Explanation:
The word that is different from the rest is Spider.

Housefly:
- A housefly is a common insect found in households.
- It belongs to the order Diptera and the family Muscidae.
- Houseflies have two wings and a pair of halteres, which help them maintain balance during flight.
- They are known for their rapid flight and ability to land on various surfaces.

Mosquito:
- A mosquito is a small insect that belongs to the order Diptera and the family Culicidae.
- It has two wings and a long proboscis, which it uses to feed on the blood of animals, including humans.
- Female mosquitoes require blood to reproduce, while male mosquitoes feed on nectar.
- Mosquitoes are known for their buzzing sound and their ability to transmit diseases such as malaria, dengue, and Zika virus.

Butterfly:
- A butterfly is an insect that belongs to the order Lepidoptera and the superfamily Papilionoidea.
- It has two pairs of wings covered with colorful scales.
- Butterflies undergo a complete metamorphosis, starting as an egg, then a larva (caterpillar), pupa (chrysalis), and finally emerging as an adult butterfly.
- They are known for their graceful flight and their association with flowers.

Spider:
- A spider is not an insect but belongs to the class Arachnida.
- It has eight legs and belongs to the order Araneae.
- Spiders have two main body parts, the cephalothorax and the abdomen.
- They are known for their ability to spin silk webs to capture prey and their venomous bites.

Conclusion:
Among the given options, the word "Spider" is different because it does not belong to the category of insects. Instead, it belongs to the class Arachnida.
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Direction: Read the passage and answer the questions that follow:Mosquitoes can transmit pathogens that cause many human diseases, such as malaria, yellow fever, dengue fever, chikungunya, and Zika fever. Many of these diseases can be physically devastating and even fatal. For example, according to the World Health Organization (WHO), there are over 200 million new cases of malaria per year worldwide, resulting in over 400,000 deaths, most of them children under the age of 5. Zika fever is caused by a virus transmitted to humans primarily by the bite of Aedes aegypti mosquitoes. Symptoms in infected human adults are typically mild, but if the virus infects a pregnant woman it can be transmitted to the developing fetus and affect brain development, causing a condition called microcephaly. To reduce the number of A. aegypti mosquitoes that may carry Zika virus, researchers at a biotechnology company called Oxitec have produced genetically modified (GM) A. aegypti mosquitoes that when released into the wild, mate with wild mosquitoes, and any offspring produced die before becoming adults.The fluorescence gene is used to_________ GM mosquitoes. The lethality gene, which is more accurately called tetracycline transcriptional activator variant (or tTAV), encodes a protein that blocks transcription of several other genes that are essential to mosquito development. GM mosquito larvae that produce the tTAV protein die before reaching maturity. However, the tTAV protein cannot prevent the transcription of other genes when it is bound to the antibiotic tetracycline. Therefore, tetracycline acts as a repressor of the lethality gene, or, in other words, its antidote. In the lab, the GM mosquito larvae are reared in water containing tetracycline and develop normally into adult mosquitoes. When adult GM mosquitoes are released into the wild and breed with wild, non-GM mosquitoes, their offspring inherit the lethality gene. Without tetracycline in the environment to protect them, the offspring die.In one study, Oxitec scientists released GM mosquitoes into a neighborhood in Brazil. Sustained release over the course of a year led to a reduction of the local Aedes aegypti population by 80% to 95% according to different measures (Carvalho et al., 2015). The scientists chose densely populated neighborhoods for their study because mosquito-borne diseases can spread most easily in areas where lots of humans and mosquitoes are present. They hypothesized that if they could reduce both the population size of the A. aegypti mosquitoes and the mosquito population density, they would reduce the probability that a person becomes infected with a pathogen spread by these mosquitoes. (An activity that shows how scientists measure mosquito density, based on data from Oxitec scientists, is available on the BioInteractive website as “Tracking Genetically Modified Mosquitoes.”)Q. Which is the synonym of the word diseases?

Direction: Read the passage and answer the questions that follow:Mosquitoes can transmit pathogens that cause many human diseases, such as malaria, yellow fever, dengue fever, chikungunya, and Zika fever. Many of these diseases can be physically devastating and even fatal. For example, according to the World Health Organization (WHO), there are over 200 million new cases of malaria per year worldwide, resulting in over 400,000 deaths, most of them children under the age of 5. Zika fever is caused by a virus transmitted to humans primarily by the bite of Aedes aegypti mosquitoes. Symptoms in infected human adults are typically mild, but if the virus infects a pregnant woman it can be transmitted to the developing fetus and affect brain development, causing a condition called microcephaly. To reduce the number of A. aegypti mosquitoes that may carry Zika virus, researchers at a biotechnology company called Oxitec have produced genetically modified (GM) A. aegypti mosquitoes that when released into the wild, mate with wild mosquitoes, and any offspring produced die before becoming adults.The fluorescence gene is used to_________ GM mosquitoes. The lethality gene, which is more accurately called tetracycline transcriptional activator variant (or tTAV), encodes a protein that blocks transcription of several other genes that are essential to mosquito development. GM mosquito larvae that produce the tTAV protein die before reaching maturity. However, the tTAV protein cannot prevent the transcription of other genes when it is bound to the antibiotic tetracycline. Therefore, tetracycline acts as a repressor of the lethality gene, or, in other words, its antidote. In the lab, the GM mosquito larvae are reared in water containing tetracycline and develop normally into adult mosquitoes. When adult GM mosquitoes are released into the wild and breed with wild, non-GM mosquitoes, their offspring inherit the lethality gene. Without tetracycline in the environment to protect them, the offspring die.In one study, Oxitec scientists released GM mosquitoes into a neighborhood in Brazil. Sustained release over the course of a year led to a reduction of the local Aedes aegypti population by 80% to 95% according to different measures (Carvalho et al., 2015). The scientists chose densely populated neighborhoods for their study because mosquito-borne diseases can spread most easily in areas where lots of humans and mosquitoes are present. They hypothesized that if they could reduce both the population size of the A. aegypti mosquitoes and the mosquito population density, they would reduce the probability that a person becomes infected with a pathogen spread by these mosquitoes. (An activity that shows how scientists measure mosquito density, based on data from Oxitec scientists, is available on the BioInteractive website as “Tracking Genetically Modified Mosquitoes.”)Q. Which of these is antonym to the the word sustained given in the passage?

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Choose the word which is different from the rest.a)Houseflyb)Spiderc)Mosquitod)ButterflyCorrect answer is option 'B'. Can you explain this answer?
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